{"id":9,"date":"2023-09-17T11:17:38","date_gmt":"2023-09-17T11:17:38","guid":{"rendered":"https:\/\/mathority.org\/it\/funzione-lineare-e-affine\/"},"modified":"2023-09-17T11:17:38","modified_gmt":"2023-09-17T11:17:38","slug":"funzione-lineare-e-affine","status":"publish","type":"post","link":"https:\/\/mathority.org\/it\/funzione-lineare-e-affine\/","title":{"rendered":"Funzione lineare e funzione affine"},"content":{"rendered":"<p>In questo articolo troverai la spiegazione della funzione affine e della funzione lineare, nonch\u00e9 le differenze che esistono tra questi due tipi di funzioni. Inoltre, vedrai esempi di come rappresentare graficamente una funzione affine e una funzione lineare e come calcolare le loro espressioni da due punti. Finalmente potrai allenarti con diversi esercizi risolti passo dopo passo. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfque-es-una-funcion-afin-y-una-funcion-lineal\"><\/span> Cos&#8217;\u00e8 una funzione affine e una funzione lineare?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Le definizioni di funzione affine e di funzione lineare sono le seguenti: <\/p>\n<div style=\"padding-top: 23px; padding-bottom: 0.5px; padding-right: 30px; padding-left: 30px; border: 2px dashed #FF9B28; border-radius:20px;\">\n<p style=\"text-align:left\"> Una <strong>funzione affine<\/strong> \u00e8 una funzione polinomiale di primo grado, cio\u00e8 una funzione che, rappresentata sul grafico, \u00e8 una retta. Le funzioni associate sono le seguenti:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d1732952e15a6b2d8b3a238c55238db2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"117\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p style=\"text-align:left\"> Oro<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e8 la pendenza della retta e<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b170995d512c659d8668b4e42e1fef6b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"n\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> Questa \u00e8 l&#8217;intercetta y, cio\u00e8 il punto in cui la funzione interseca l&#8217;asse verticale.<\/p>\n<\/div>\n<p> In matematica, le funzioni affini sono anche chiamate trasformazioni lineari nel contesto dell&#8217;algebra lineare. <\/p>\n<div style=\"padding-top: 23px; padding-bottom: 0.5px; padding-right: 30px; padding-left: 30px; border: 2px dashed #FF9B28; border-radius:20px;\">\n<p style=\"text-align:left\"> Una <strong>funzione lineare<\/strong> \u00e8 una funzione affine che non ha un termine indipendente. Pertanto la formula per le funzioni lineari \u00e8:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2a49c9283eb692c32d4d6594620269ed_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"84\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p style=\"text-align:left\"> Oro<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e8 la pendenza della retta.<\/p>\n<\/div>\n<p> Il dominio e l&#8217;intervallo (o intervallo) della funzione lineare e della funzione affine sono tutti numeri reali: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-91d461485d0f02bb14db6855a3774878_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom } f=\\mathbff{R}\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"91\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5a954b5c192478c3b7b14428ac8d5cbc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Im } f= \\mathbb{R}\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"74\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfcual-es-la-diferencia-entre-una-funcion-lineal-y-una-funcion-afin\"><\/span> Qual \u00e8 la differenza tra una funzione lineare e una funzione affine?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Ora che hai visto i concetti di funzione lineare e funzione affine, avrai notato che sono molto simili tra loro. Tuttavia, la seguente differenza tra loro \u00e8 molto importante:<\/p>\n<p> L&#8217;unica differenza tra la funzione lineare e la funzione affine \u00e8 che la funzione lineare non ha un termine indipendente mentre la funzione affine ha sempre il coefficiente dell&#8217;intercetta (n) diverso da zero (0). <\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-385\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#1976d2\"> <strong>Funzione lineare<\/strong> <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2a49c9283eb692c32d4d6594620269ed_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"84\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-medium-font-size\" style=\"color:#1976d2\"> <strong>funzione lineare<\/strong><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d1732952e15a6b2d8b3a238c55238db2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"117\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<\/div>\n<\/div>\n<p> Ci\u00f2 implica che <strong>una funzione lineare passa sempre per l&#8217;origine delle coordinate<\/strong> , il punto (0,0). D&#8217;altra parte, una funzione affine non passer\u00e0 mai per questo punto perch\u00e9 ha un&#8217;intercetta diversa da 0. <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/difference-entre-fonction-lineaire-et-fonction-affine.webp\" alt=\"Qual \u00e8 la differenza tra una funzione lineare e una funzione affine?\" class=\"wp-image-97\" width=\"400\" height=\"285\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"pendiente-y-ordenada-en-el-origen-de-una-funcion-lineal-o-afin\"><\/span> Pendenza e intercetta y di una funzione lineare o affine<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> In questa sezione analizzeremo un esempio di funzione affine o lineare per comprendere il significato dei termini<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b170995d512c659d8668b4e42e1fef6b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"n\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> , o in altre parole, la pendenza e l&#8217;intercetta y.<\/p>\n<ul>\n<li> Determina l&#8217;espressione della funzione mostrata nel grafico e classificala come funzione lineare o affine.<\/li>\n<\/ul>\n<p> Questi tipi di funzioni seguono la seguente espressione:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d1732952e15a6b2d8b3a238c55238db2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"117\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-388\">\n<div class=\"wp-block-column is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/sens-pente-et-ordonnee-a-l-origine-fonction-lineaire-ou-affine-m-et-n.webp\" alt=\"che significa pendenza e intercetta y funzione lineare o affine m e n\" class=\"wp-image-98\" width=\"418\" height=\"448\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b170995d512c659d8668b4e42e1fef6b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"n\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> Questa \u00e8 l&#8217;intercetta y, cio\u00e8 il punto in cui la funzione interseca l&#8217;asse Y verticale. Quindi in questo caso:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3d48be04aadb63e5661f86d0948d7553_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"n=4\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"43\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Da un altro lato,<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e8 la pendenza della retta. Y pu\u00f2 essere calcolato dividendo la differenza in <em>y<\/em> tra due punti per la differenza in <em>x<\/em> tra questi stessi due punti:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8873a380186fcf86095bca15c8e96833_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{\\Delta y }{\\Delta x} = \\cfrac{3}{2}\" title=\"Rendered by QuickLaTeX.com\" height=\"39\" width=\"101\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> dice <em>\u201cquanto aumenta y per ogni x\u201d<\/em> , quindi in questo caso la funzione <em>\u201c3y aumenta per ogni 2x\u201d<\/em> .<\/p>\n<\/div>\n<\/div>\n<p> In conclusione, l\u2019espressione per la funzione affine rappresentata nel grafico \u00e8:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-16ef154b129d3fb6b20a41ec0d38c930_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\bm{f(x)=}\\frac{\\bm{3}}{\\bm{2}}\\bm{x+4}\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"107\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p> Inoltre, poich\u00e9 l&#8217;intercetta y \u00e8 diversa da zero, \u00e8 una <strong>funzione affine<\/strong> .<\/p>\n<p> Di seguito ti mostriamo altri esempi di funzioni lineari e affini per completare la tua comprensione: <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemples-de-fonctions-lineaires-et-affines.webp\" alt=\"esempi di funzioni lineari e affini\" class=\"wp-image-100\" width=\"386\" height=\"382\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<p> Come puoi vedere in questi esempi, maggiore \u00e8 la pendenza, pi\u00f9 ripida \u00e8 la linea e, quindi, pi\u00f9 grande \u00e8 la funzione. Allo stesso modo, il coefficiente di pendenza determina la crescita o la diminuzione di una funzione:<\/p>\n<ul>\n<li> Se la pendenza \u00e8 positiva la funzione \u00e8 <strong>crescente<\/strong> , cio\u00e8 aumenta all&#8217;aumentare di <em>x<\/em> .<\/li>\n<li> Se la pendenza \u00e8 negativa la funzione \u00e8 <strong>decrescente<\/strong> , cio\u00e8 diminuisce all&#8217;aumentare <em>di x<\/em> .<\/li>\n<\/ul>\n<p> Inoltre, puoi anche capire se due rette sono parallele o perpendicolari in base alle loro pendenze:<\/p>\n<ul>\n<li> Quando due rette hanno la stessa pendenza sono <strong>parallele<\/strong> , cio\u00e8 non si intersecano in nessun punto oppure sono completamente identiche.<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fd2942bbc0cd70bab6eb307042d9697e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1 = m_2\" title=\"Rendered by QuickLaTeX.com\" height=\"11\" width=\"70\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<ul>\n<li> D&#8217;altra parte, due rette sono <strong>perpendicolari<\/strong> , cio\u00e8 si intersecano formando un angolo verticale (90\u00ba), se le loro pendenze corrispondono alla seguente relazione: <\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d4b49ed21ffb9c69fda11072fcf982ba_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1 = -\\cfrac{1}{m_2}\" title=\"Rendered by QuickLaTeX.com\" height=\"41\" width=\"87\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ejemplo-de-como-representar-una-funcion-afin-o-lineal\"><\/span> Esempio di rappresentazione di una funzione affine o lineare<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Vediamo come rappresentare graficamente una funzione di primo grado utilizzando un esempio.<\/p>\n<ul>\n<li> Rappresentare graficamente la seguente funzione affine:<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dca0572b440601ddb5b528a0756584f1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=2x-1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"107\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> La prima cosa che dobbiamo fare \u00e8 creare un <strong>array di valori.<\/strong> Per fare questo, garantiamo i valori che desideriamo<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> per ottenere valori di<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a7ee323bc5a3f73ad5e066b13bed5504_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"34\" style=\"vertical-align: -5px;\"><\/p>\n<p> :<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dca0572b440601ddb5b528a0756584f1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=2x-1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"107\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-391\">\n<div class=\"wp-block-column is-layout-flow\">\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c8ac84d67d3aac1aed17811791011ad7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 0 \\ \\longrightarrow \\ f(0) = 2\\cdot0-1=-1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"256\" style=\"vertical-align: -5px;\"><\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a22669dbeb064858cef0cae657407117_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 1 \\ \\longrightarrow \\ f(1) = 2\\cdot1-1=1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"242\" style=\"vertical-align: -5px;\"><\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a92a82278b7484dbb13e87bbdb66a28d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 2 \\ \\longrightarrow \\ f(2) = 2\\cdot2-1=3\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"243\" style=\"vertical-align: -5px;\"><\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c0809f5fecaf91c81f4f677ba608a0e6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 3 \\ \\longrightarrow \\ f(3) = 2\\cdot3-1=5\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"242\" style=\"vertical-align: -5px;\"><\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-29397a3b67142b737a56db3bffb52d68_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 4 \\ \\longrightarrow \\ f(4) = 2\\cdot4-1=7\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"243\" style=\"vertical-align: -5px;\"><\/p>\n<\/li>\n<\/ul>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6a5b457023582bcda44b49a7b32e51fc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{c|c} x &amp; f(x) \\\\ \\hline 0 &amp; -1 \\\\ 1 &amp; 1 \\\\ 2 &amp; 3 \\\\ 3 &amp; 5 \\\\ 4 &amp; 7 \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"134\" width=\"78\" style=\"vertical-align: -62px;\"><\/p>\n<\/p>\n<\/div>\n<\/div>\n<p> Sebbene una tabella di valori con due punti sia sufficiente, possiamo fare pi\u00f9 punti per assicurarci che sia corretta.<\/p>\n<p> Una volta creata la tabella dei valori, tracciamo i punti sul grafico: <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/comment-representer-une-ligne-ou-une-fonction-lineaire-ou-et-affine.webp\" alt=\"come rappresentare una retta o una funzione lineare o affine\" class=\"wp-image-102\" width=\"271\" height=\"324\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<p> E infine, <strong>uniamo i punti e tracciamo una linea:<\/strong> <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemple-de-comment-representer-une-fonction-lineaire-ou-ou-et-affine.webp\" alt=\"rappresentazione grafica di una funzione lineare o affine\" class=\"wp-image-103\" width=\"271\" height=\"330\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<p> E in questo modo abbiamo gi\u00e0 rappresentato la funzione su un grafico. <strong>&nbsp;<\/strong> Come puoi vedere, non \u00e8 complicato, devi solo creare prima una tabella di valori e poi tracciare i punti su un grafico. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"como-calcular-una-funcion-lineal-o-afin-a-partir-de-dos-puntos\"><\/span> Come calcolare una funzione lineare o affine da due punti<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Vediamo ora come trovare una funzione lineare o affine da due punti utilizzando un esempio:<\/p>\n<ul>\n<li> Calcolare la funzione lineare che soddisfa\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dcaf3e57f968a5585f1fe8f7e07016e5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(3)=5\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"65\" style=\"vertical-align: -5px;\"><\/p>\n<p> e andare oltre il punto<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f59d9c3d732b06d58e1cd9513069cc4c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(1,-1).\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"57\" style=\"vertical-align: -5px;\"><\/p>\n<\/li>\n<\/ul>\n<p> Prima di tutto,<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dcaf3e57f968a5585f1fe8f7e07016e5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(3)=5\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"65\" style=\"vertical-align: -5px;\"><\/p>\n<p> Ci\u00f2 significa che la funzione passa per il punto<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8f8369540798772faed784207e58ae55_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(3,5)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"38\" style=\"vertical-align: -5px;\"><\/p>\n<p> .<\/p>\n<p> Pertanto, poich\u00e9 abbiamo due punti attraverso i quali passa la funzione, possiamo calcolare la pendenza<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> funzione: <\/p>\n<div style=\"padding-top: 23px; padding-bottom: 0.5px; padding-right: 30px; padding-left: 30px; border: 2px dashed #FF9B28; border-radius:20px;\">\n<p style=\"text-align:left\"> Considerando due punti,<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d6f312097ed9f1bcf614aae0044c7765_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1=(x_1,y_1)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"98\" style=\"vertical-align: -5px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6feb628a7385a800d321cbc982c2bcae_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_2=(x_2,y_2)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"98\" style=\"vertical-align: -5px;\"><\/p>\n<p> , pendenza<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> della funzione si calcola:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4a88e2c28902f606d97c18ba771d9c76_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{y_2-y_1}{x_2-x_1}\" title=\"Rendered by QuickLaTeX.com\" height=\"37\" width=\"99\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<\/div>\n<p> Nel nostro caso la funzione passa per i punti<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8f8369540798772faed784207e58ae55_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(3,5)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"38\" style=\"vertical-align: -5px;\"><\/p>\n<p> E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1cc5fe781d8432f7ebfcf92c0ed07e91_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(1,-1)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"52\" style=\"vertical-align: -5px;\"><\/p>\n<p> . Quindi la pendenza<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> della funzione \u00e8:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-02ea1d529b499f171f3ff18c468d0cf5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{y_2-y_1}{x_2-x_1}=\\cfrac{-1-5}{1-3} = \\cfrac{-6}{-2} = 3\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"274\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<p> La funzione sar\u00e0 quindi della forma:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f800c39c0283b89e9c100f86ac3aa569_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x) = mx+n \\ \\xrightarrow{m \\ = \\ 3} \\ f(x)=3x+n\" title=\"Rendered by QuickLaTeX.com\" height=\"24\" width=\"300\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Una volta che lo sappiamo<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6b41df788161942c6f98604d37de8098_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> possiamo risolvere il mistero<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b170995d512c659d8668b4e42e1fef6b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"n\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> . Per fare ci\u00f2, sostituiamo nell&#8217;equazione le coordinate di un punto appartenente alla funzione. Ad esempio il punto (3.5):<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-111cff72f16afeb14bf0adc34ea12722_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x) = 3x+n \\ \\xrightarrow{x \\ = \\ 3 \\ ; \\ f(x) \\ = \\ 5} \\ 5=3\\cdot 3+n\" title=\"Rendered by QuickLaTeX.com\" height=\"27\" width=\"346\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Risolviamo l&#8217;equazione risultante: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6a383ecabacc56c374f2632b3309e646_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"5=3\\cdot 3+n\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"96\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4acdfe704344eeccbb4c0ce2aa8cb6d6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"5= 9 + n\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"74\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-cc095accd2a13223af51801296862fac_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"5-9=n\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"74\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0d38777454deed26667e36a226cc6770_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-4=n\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"56\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> La funzione lineare \u00e8 quindi: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-990c0a75a513e5f8d6669ce748eecd63_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{f(x)=3x-4}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"108\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ejercicios-resueltos-de-funciones-lineales-y-afines\"><\/span> Esercizi risolti su funzioni lineari e affini<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 class=\"wp-block-heading\"> Esercizio 1<\/h3>\n<p> Determinare la pendenza e l&#8217;origine della seguente funzione affine: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9ff1c8dfeb32e0c75d6ecb9acbef4151_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=-5x-2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"121\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Una funzione lineare ha la forma<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3095199eaa883b4a577420057f14c9bf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n .\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"121\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La pendenza della funzione \u00e8 quindi il numero che accompagna <em>x<\/em> , che in questo caso \u00e8 -5:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-838d2dc7b4e31dfa890c7bf46cf4c659_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{m=-5}\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"61\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E l&#8217;intercetta y \u00e8 il termine indipendente, che in questo caso \u00e8 -2: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-225005765465b924bc63ee2dac575ee4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{n=-2}\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"56\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Esercizio 2<\/h3>\n<p> Rappresentare graficamente la seguente funzione affine: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4ca04971231d90bc195d20cebd45226d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=x+1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"98\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Per prima cosa diamo valori a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> per creare la tabella dei valori: <\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-394\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8ffd3e516a1e47332c5458d96e0abc2f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 0 \\ \\longrightarrow \\ f(0)=0+1 = 1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"221\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3256a22f5e49068792b52a4cb3f32e1c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 1 \\ \\longrightarrow \\ f(1)=1+1= 2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"221\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d5eaf1ca05c3eeb0614616a12d4faf5c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 2 \\ \\longrightarrow \\ f(2)=2+1 = 3\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"222\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a4711b4b555b2beb6e1e65069045c827_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 3 \\ \\longrightarrow \\ f(3)=3+1 = 4\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"222\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3fd5f740b4ded3fb539f40bc4ff22598_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 4 \\ \\longrightarrow \\ f(4)=4+1 = 5\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"221\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-07a0daee6d389ad38ae336953e74212e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{c|c} x &amp; f(x) \\\\ \\hline 0 &amp; 1 \\\\ 1 &amp; 2 \\\\ 2 &amp; 3 \\\\ 3 &amp; 4 \\\\ 4 &amp; 5 \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"134\" width=\"78\" style=\"vertical-align: -62px;\"><\/p>\n<\/p>\n<\/div>\n<\/div>\n<p class=\"has-text-align-left\"> E poi rappresentiamo i punti della tabella dei valori sul grafico e tracciamo la linea: <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemple-de-representation-d-une-fonction-lineaire-ou-affine.webp\" alt=\"esempio di funzione lineare o affine\" class=\"wp-image-104\" width=\"298\" height=\"300\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\"> Esercizio 3<\/h3>\n<p> Traccia la seguente funzione affine sul grafico: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4272bc4942f138baaa519097437b2bd9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=-2x+6\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"122\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Per prima cosa diamo valori a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> per creare la tabella dei valori: <\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-397\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-82c245e8a3c6926ba0fd3319d5d11e22_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 0 \\ \\longrightarrow \\ f(0)=-2\\cdot0+6=6\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"257\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8d4fbcfc157e581eef387c5ae9524207_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 1 \\ \\longrightarrow \\ f(1)=-2\\cdot1+6=4\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"257\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-64cea2a0c5df62d57ddd291a031bf2c7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 2 \\ \\longrightarrow \\ f(2)=-2\\cdot2+6=2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"256\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0ee8f2f12cb377010e2b1edc1740551d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 3 \\ \\longrightarrow \\ f(3)=-2\\cdot3+6=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"257\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d8a970fcd4aabe974e7b43143e1c1662_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 4 \\ \\longrightarrow \\ f(4)=-2\\cdot4+6=-2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"270\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9ae65b37659a4f19b4ff406cf985c52f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{c|c} x &amp; f(x) \\\\ \\hline 0 &amp; 6 \\\\ 1 &amp; 4 \\\\ 2 &amp; 2 \\\\ 3 &amp; 0 \\\\ 4 &amp; -2 \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"134\" width=\"78\" style=\"vertical-align: -62px;\"><\/p>\n<\/p>\n<\/div>\n<\/div>\n<p class=\"has-text-align-left\"> E infine rappresentiamo i punti della tabella dei valori sul grafico e tracciamo la linea: <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exercice-resolu-etape-par-etape-de-la-fonction-lineaire-et-affine.webp\" alt=\"esercizio risolto passo dopo passo di funzione lineare e affine\" class=\"wp-image-105\" width=\"285\" height=\"330\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\"> Esercizio 4<\/h3>\n<p> Trova l&#8217;espressione della funzione affine che passa per i punti (2,3) e (0,1). <\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> La funzione passa per i punti (2,3) e (0,1), quindi la pendenza della funzione \u00e8:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f4f10490753a418b0601db00acb61a8c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{y_2-y_1}{x_2-x_1}= \\cfrac{1-3}{0-2} =  \\cfrac{-2}{-2} = 1\" title=\"Rendered by QuickLaTeX.com\" height=\"41\" width=\"251\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E la funzione sar\u00e0 della forma:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-80174e7bf0ea29ddc23f7bca21ec46e0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n \\ \\xrightarrow{m \\ = \\ 1} \\ f(x)=1x+n\" title=\"Rendered by QuickLaTeX.com\" height=\"24\" width=\"300\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Una volta conosciuto <em>m,<\/em> possiamo calcolare <em>n<\/em> . Per fare ci\u00f2, dobbiamo sostituire nell&#8217;equazione le coordinate di un punto appartenente alla funzione. Ad esempio il punto (2,3):<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ffadb24154a49ca4808fad52f6330a98_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=x+n \\ \\xrightarrow{x \\ = \\ 2 \\ ; \\ f(x) \\ = \\ 3}\" title=\"Rendered by QuickLaTeX.com\" height=\"27\" width=\"230\" style=\"vertical-align: -5px;\"><\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1e5cb38630c489d48c4adb35288c325a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"3=2+n\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"74\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Dobbiamo ora risolvere l\u2019equazione risultante: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-82a2b13b17155458c1cfbc94d8a6f88c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"3-2=n\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"74\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f995cf70a3bdfa97f5e6e43d1eb07e79_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"1 = n\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"43\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La funzione corrisponde quindi alla seguente espressione: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-29c9618eec0cecf4ff1e3f05777f2a63_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{f(x)=x+1}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"98\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Esercizio 5<\/h3>\n<p> Rappresentare graficamente la seguente funzione affine: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dca0572b440601ddb5b528a0756584f1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=2x-1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"107\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Per prima cosa diamo valori a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> per creare la tabella dei valori: <\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-400\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-27331248cc252b7e2a6be76fde869f0a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 0 \\ \\longrightarrow \\ f(0)=2\\cdot0-1=-1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"256\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d6116a53149febdbcded873f845f0446_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 1 \\ \\longrightarrow \\ f(1)=2\\cdot1-1=1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"242\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-93fea3471744dd8e7edff0fef0911358_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 2 \\ \\longrightarrow \\ f(2)=2\\cdot2-1=3\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"243\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-082c427704a99dd49b676178475e0e8a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 3 \\ \\longrightarrow \\ f(3)=2\\cdot3-1=5\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"242\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ee4ce2e65971139e1148bcc04f5156dd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x= 4 \\ \\longrightarrow \\ f(4)=2\\cdot4-1=7\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"243\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6a5b457023582bcda44b49a7b32e51fc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{c|c} x &amp; f(x) \\\\ \\hline 0 &amp; -1 \\\\ 1 &amp; 1 \\\\ 2 &amp; 3 \\\\ 3 &amp; 5 \\\\ 4 &amp; 7 \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"134\" width=\"78\" style=\"vertical-align: -62px;\"><\/p>\n<\/p>\n<\/div>\n<\/div>\n<p class=\"has-text-align-left\"> E poi rappresentiamo i punti della tabella dei valori sul grafico e tracciamo la linea: <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exercices-resolus-pour-representer-graphiquement-une-fonction-lineaire-ou-affine.webp\" alt=\"Esercizi risolti per rappresentare graficamente una funzione lineare o affine\" class=\"wp-image-106\" width=\"288\" height=\"332\" srcset=\"\" sizes=\"auto, \" data-src=\"\"><\/figure>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\"> Esercizio 6<\/h3>\n<p> Calcolare la funzione lineare che soddisfa le seguenti due condizioni: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a3d1692f49f622f3167c7b58da6553eb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{c}f(3) =-2 \\\\[3ex] f(-1)=6 \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"64\" width=\"80\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Possa realizzarsi<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-de991e61c8f0c76be20d28dcd3b5ec63_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(3)=-2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"79\" style=\"vertical-align: -5px;\"><\/p>\n<p> Ci\u00f2 significa che la funzione passa per il punto (3,-2). E, allo stesso modo,<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-08e6a3dd72034cf812c9ec3371bccbb7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(-1)=6\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"80\" style=\"vertical-align: -5px;\"><\/p>\n<p> Ci\u00f2 significa che la funzione passa per il punto (-1.6).<\/p>\n<p class=\"has-text-align-left\"> Quindi la funzione passa per i punti (3,-2) e (-1,6), quindi la sua pendenza \u00e8:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-509c7a10c079fd4147be9e5a6db9731f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{y_2-y_1}{x_2-x_1}= \\cfrac{6-(-2)}{-1-3} =  \\cfrac{8}{-4} = -2\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"285\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La funzione sar\u00e0 quindi della forma:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1833407e00cf7092ca41513f80c963e3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n \\ \\xrightarrow{m \\ = \\ -2} \\ f(x)=-2x+n\" title=\"Rendered by QuickLaTeX.com\" height=\"24\" width=\"324\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E una volta conosciuto <em>m,<\/em> possiamo calcolare <em>n<\/em> . Per fare ci\u00f2, sostituiamo nell&#8217;equazione le coordinate di un punto che appartiene alla funzione. Ad esempio il punto (3,-2):<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f5c91af073f3a11f71681315cba7d3ac_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=-2x+n \\ \\xrightarrow{x \\ = \\ 3 \\ ; \\ f(x) \\ = \\ -2} \\ -2=-2(3)+n\" title=\"Rendered by QuickLaTeX.com\" height=\"27\" width=\"399\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E risolviamo l&#8217;equazione risultante: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-56b34b13f1ca6690edf49b273faf8e47_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-2=-6+n\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"101\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-35e58196fb8bcc421558f84060bc0abe_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-2+6=n\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"87\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-bafe7c1342021b2f12487ec1b624d9e9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"4 = n\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"44\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La funzione \u00e8 quindi: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2817bf14204167be08e3289249900e05_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{f(x)=-2x+4}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"122\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Esercizio 7<\/h3>\n<p> Trova la funzione affine che svolge<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7752d35fe272bb4d90b00bf9985ffb63_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(1) =6\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"66\" style=\"vertical-align: -5px;\"><\/p>\n<p> e passa per il punto (3.5). <\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Possa realizzarsi<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-87c967e7ae983729b88590e501c2b69d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(1)=6\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"66\" style=\"vertical-align: -5px;\"><\/p>\n<p> Ci\u00f2 significa che la funzione passa per il punto (1,6).<\/p>\n<p class=\"has-text-align-left\"> La funzione passa quindi per i punti (1.6) e (3.5) e quindi la sua pendenza \u00e8:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-25be93e89790b6ff41c7ad200b22475d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{y_2-y_1}{x_2-x_1}= \\cfrac{5-6}{3-1} =  \\cfrac{-1}{2} = -\\cfrac{1}{2}\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"268\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La funzione sar\u00e0 quindi della forma:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-357e8e8231ddfc481d6cab7afd462b29_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle f(x)=mx+n \\ \\xrightarrow{m \\ = \\ -\\frac{1}{2}} \\ f(x)=-\\frac{1}{2}x+n\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"331\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Una volta conosciuto il termine <em>m<\/em> possiamo calcolare il coefficiente <em>n<\/em> . Per fare ci\u00f2, sostituiamo nell&#8217;equazione le coordinate di un punto che appartiene alla funzione. Ad esempio il punto (1,6):<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-e29097997af1faaad2a3cf090735e93b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle f(x)=-\\frac{1}{2}x+n \\ \\xrightarrow{x \\ = \\ 1 \\ ; \\ f(x) \\ = \\ 6} \\ 6=-\\frac{1}{2}\\cdot 1+n\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"382\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Risolviamo l&#8217;equazione risultante: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-408ca3818c086b1dce8b47368a15bfd5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"6=-\\cfrac{1}{2}+n\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"90\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-972080f9f560be2c94e6d60ceb4b68f6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"6+\\cfrac{1}{2}=n\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"76\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Ricorda che per sommare le frazioni, devi prima ridurle a un denominatore comune e poi sommare i numeratori: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b0fdf111f0ee471be66bf09dedb3113f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\cfrac{2 \\cdot 6}{2} +\\cfrac{1 \\cdot 1}{2}=n\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"119\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4bcf8f895f3b9dbc94eeb771599de7a5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\cfrac{12}{2} +\\cfrac{1}{2}=n\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"85\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ce0c299c5e810194441adaaa77052141_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\cfrac{13}{2}=n\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"52\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La funzione \u00e8 quindi:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5d52b77879b38c968ace696be9d9d8bc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\bm{f(x)=-}\\mathbf{\\frac{1}{2}}\\bm{x +}\\mathbf{\\frac{13}{2}}\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"133\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Esercizio 8<\/h3>\n<p> Risolvi il seguente problema relativo alle funzioni lineari e affini:<\/p>\n<p> Un negozio vende 40 unit\u00e0 di un prodotto quando il prezzo \u00e8 15 \u20ac\/unit\u00e0 e 65 unit\u00e0 quando il prezzo \u00e8 10 \u20ac\/unit\u00e0.<\/p>\n<ul>\n<li> Calcolare la funzione di domanda del prodotto, supponendo che sia una funzione affine.<\/li>\n<li> Quante unit\u00e0 verranno vendute se il prezzo \u00e8 fissato a 12 \u20ac\/unit\u00e0? <\/li>\n<\/ul>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E6F9EF\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E6F9EF\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>Vedi la soluzione<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Poich\u00e9 si tratta di una funzione affine, la funzione sar\u00e0 del tipo<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3095199eaa883b4a577420057f14c9bf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n .\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"121\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Oro<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> sar\u00e0 il prezzo unitario del prodotto e<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a7ee323bc5a3f73ad5e066b13bed5504_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"34\" style=\"vertical-align: -5px;\"><\/p>\n<p> saranno le unit\u00e0 vendute.<\/p>\n<p class=\"has-text-align-left\"> Il comunicato stampa ci dice che quando il prezzo \u00e8 di 15\u20ac\/unit\u00e0, vengono vendute 40 unit\u00e0. Pertanto, come<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e8 il prezzo e<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a7ee323bc5a3f73ad5e066b13bed5504_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"34\" style=\"vertical-align: -5px;\"><\/p>\n<p> unit\u00e0 vendute, deve essere rispettata la seguente uguaglianza:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-30c972565ef68f3789b5e1b1e105b66b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(15)=40\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"84\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E quando il prezzo \u00e8 di 10\u20ac\/unit\u00e0, vengono vendute 65 unit\u00e0. Quindi, utilizzando lo stesso ragionamento:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0c374f04a1aa91c4595ced5978e19ec0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(10)=65\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"83\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Possa realizzarsi<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-30c972565ef68f3789b5e1b1e105b66b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(15)=40\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"84\" style=\"vertical-align: -5px;\"><\/p>\n<p> Ci\u00f2 significa che la funzione passa per il punto (15.40). E<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0c374f04a1aa91c4595ced5978e19ec0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(10)=65\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"83\" style=\"vertical-align: -5px;\"><\/p>\n<p> Ci\u00f2 significa che la funzione passa per il punto (10.65).<\/p>\n<p class=\"has-text-align-left\"> La pendenza della funzione \u00e8 quindi:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-19d12bc43ba65997543514a46a424301_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{y_2-y_1}{x_2-x_1}= \\cfrac{65-40}{10-15} =  \\cfrac{25}{-5} = -5\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"275\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La funzione sar\u00e0 quindi della forma:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c653a8902579c75163dfb0efa71a9c2f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=mx+n \\ \\xrightarrow{m \\ = \\ -5} \\ f(x)=-5x+n\" title=\"Rendered by QuickLaTeX.com\" height=\"24\" width=\"324\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Una volta conosciuto <em>m,<\/em> possiamo calcolare <em>n<\/em> . Per fare ci\u00f2, sostituiamo nell&#8217;equazione le coordinate di un punto che appartiene alla funzione. Ad esempio il punto (15:40):<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f043edeab26099d2c05be4109b39e4e2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=-5x+n \\ \\xrightarrow{x \\ = \\ 15 \\ ; \\ f(x) \\ = \\ 40} \\ 40=-5\\cdot 15+n\" title=\"Rendered by QuickLaTeX.com\" height=\"27\" width=\"405\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E risolviamo l&#8217;equazione risultante: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9d17b5b0000974efdedcaddc0c0e7404_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"40=-75+n\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"106\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8f40a79e7be9eb350f20e18fcfe08675_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"40+75=n\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"92\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-be394c1a643fe670a57cd4c371148bbe_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"115 = n\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"60\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> La funzione che lega le vendite effettuate al prezzo \u00e8 quindi:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2d1f8a22eae1bc5a4f7de6429df736e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{f(x)=-5x+115}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"139\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> D&#8217;altra parte, nella funzione<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> rappresenta il prezzo. Pertanto, per sapere quante unit\u00e0 verranno vendute se il prezzo \u00e8 di 12 \u20ac\/unit\u00e0, dobbiamo fare un calcolo <\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-de2b2b66a522f43df538a99d24f91a2e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(12):\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"51\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c5d1377b45096930b54887788e3890d1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=-5x+115 \\ \\xrightarrow{x \\ = \\ 12} \\ f(12)=-5\\cdot 12+115\" title=\"Rendered by QuickLaTeX.com\" height=\"24\" width=\"382\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-72ca5e4fc71841fca17d0fa3281805e4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(12)=-60+115\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"145\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7de4fca9d520f20befbecd9d1234bfc0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(12)=\\bm{55}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"83\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> Quindi se il prezzo \u00e8 12\u20ac\/unit\u00e0 <strong>, verranno vendute 55 unit\u00e0.<\/strong><\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In questo articolo troverai la spiegazione della funzione affine e della funzione lineare, nonch\u00e9 le differenze che esistono tra questi due tipi di funzioni. Inoltre, vedrai esempi di come rappresentare graficamente una funzione affine e una funzione lineare e come calcolare le loro espressioni da due punti. Finalmente potrai allenarti con diversi esercizi risolti passo &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/it\/funzione-lineare-e-affine\/\"> <span class=\"screen-reader-text\">Funzione lineare e funzione affine<\/span> Leggi altro &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[17],"tags":[],"class_list":["post-9","post","type-post","status-publish","format-standard","hentry","category-rappresentazione-delle-funzioni"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Funzione lineare e funzione affine -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mathority.org\/it\/funzione-lineare-e-affine\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Funzione lineare e funzione affine -\" \/>\n<meta property=\"og:description\" content=\"In questo articolo troverai la spiegazione della funzione affine e della funzione lineare, nonch\u00e9 le differenze che esistono tra questi due tipi di funzioni. Inoltre, vedrai esempi di come rappresentare graficamente una funzione affine e una funzione lineare e come calcolare le loro espressioni da due punti. 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