{"id":225,"date":"2023-07-10T23:13:43","date_gmt":"2023-07-10T23:13:43","guid":{"rendered":"https:\/\/mathority.org\/pt\/formula-de-inclinacao-da-linha\/"},"modified":"2023-07-10T23:13:43","modified_gmt":"2023-07-10T23:13:43","slug":"formula-de-inclinacao-da-linha","status":"publish","type":"post","link":"https:\/\/mathority.org\/pt\/formula-de-inclinacao-da-linha\/","title":{"rendered":"Inclina\u00e7\u00e3o de uma linha (f\u00f3rmula)"},"content":{"rendered":"<p>Nesta p\u00e1gina voc\u00ea encontrar\u00e1 a explica\u00e7\u00e3o mais detalhada da inclina\u00e7\u00e3o de uma reta: qual \u00e9 sua f\u00f3rmula, exemplos de c\u00e1lculo, o que significa o conceito de inclina\u00e7\u00e3o de uma reta,\u2026 Voc\u00ea tamb\u00e9m poder\u00e1 ver como identificar facilmente a inclina\u00e7\u00e3o de uma reta a partir de sua equa\u00e7\u00e3o e, al\u00e9m disso, poder\u00e1 praticar com exerc\u00edcios resolvidos passo a passo. <\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-104\"><\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"formula-de-la-pendiente-de-una-recta\"><\/span> F\u00f3rmula para a inclina\u00e7\u00e3o de uma linha <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-105\"><\/div>\n<\/div>\n<div style=\"background-color:#FFCC8080;padding-top: 20px; padding-bottom: 0.5px; padding-right: 30px; padding-left: 30px; border: 2px solid #FFB74D; border-radius:20px;\">\n<p style=\"text-align:left\"> A <strong>inclina\u00e7\u00e3o de uma linha<\/strong> \u00e9 igual ao deslocamento vertical entre dois pontos dividido pelo deslocamento horizontal entre esses mesmos dois pontos.<\/p>\n<p style=\"text-align:left\"> Isto \u00e9, dados dois pontos em uma linha:<\/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-64af51bbaed8952d251997515c64b85c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1(x_1,y_1) \\qquad P_2(x_2,y_2)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"184\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p style=\"text-align:left\"> A f\u00f3rmula para a inclina\u00e7\u00e3o de uma linha \u00e9: <\/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-6ca826248e812d4f19056960777cb00f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m = \\cfrac{\\Delta y}{\\Delta x} = \\cfrac{y_2-y_1}{x_2-x_1}\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"150\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<\/div>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/pente-dune-ligne-1.webp\" alt=\"qual \u00e9 a inclina\u00e7\u00e3o de uma linha\" class=\"wp-image-1523\" width=\"328\" height=\"312\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ejemplo-de-como-calcular-la-pendiente-de-una-recta-a-partir-de-dos-puntos\"><\/span> Exemplo de c\u00e1lculo da inclina\u00e7\u00e3o de uma linha a partir de dois pontos <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-106\"><\/div>\n<\/div>\n<p> A seguir, veremos um exemplo de como a inclina\u00e7\u00e3o de uma reta \u00e9 calculada com a f\u00f3rmula:<\/p>\n<ul>\n<li> Calcule a inclina\u00e7\u00e3o da reta que passa pelos dois pontos a seguir:<\/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-5625033af5d12379bbc5e375fd06888d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1(3,1) \\qquad P_2(5,7)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"152\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Para encontrar a inclina\u00e7\u00e3o desta reta, basta aplicar sua f\u00f3rmula:<\/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-a5b9ed9145447559a6eb62e27c584432_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m = \\cfrac{\\Delta y}{\\Delta x} = \\cfrac{y_2-y_1}{x_2-x_1}=\\cfrac{7-1}{5-3}=\\cfrac{6}{2} = \\bm{3}\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"281\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<p> A inclina\u00e7\u00e3o da linha \u00e9, portanto, igual a 3. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"hallar-la-pendiente-de-una-recta-a-partir-de-su-ecuacion\"><\/span> Encontrar a inclina\u00e7\u00e3o de uma reta a partir de sua equa\u00e7\u00e3o <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-109\"><\/div>\n<\/div>\n<p> Na se\u00e7\u00e3o acima, vimos como determinar numericamente a inclina\u00e7\u00e3o de uma reta. Por\u00e9m, nem sempre \u00e9 necess\u00e1rio fazer c\u00e1lculos, mas seu valor tamb\u00e9m pode ser identificado a partir da equa\u00e7\u00e3o de uma reta. Cada tipo de equa\u00e7\u00e3o \u00e9 diferente, por isso analisaremos cada caso separadamente. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"pendiente-dada-la-ecuacion-explicita-de-la-recta\"><\/span> Inclina\u00e7\u00e3o dada a equa\u00e7\u00e3o expl\u00edcita da reta<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A equa\u00e7\u00e3o expl\u00edcita da reta segue a seguinte express\u00e3o:<\/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-9f20f0b48ca24d4d8e36d110a7a9fab0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y =\\color{blue}\\bm{m}\\color{black}x+n\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"163\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p> Ent\u00e3o o par\u00e2metro<\/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> corresponde \u00e0 inclina\u00e7\u00e3o da linha. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"pendiente-dada-la-ecuacion-punto-pendiente-de-la-recta\"><\/span> Inclina\u00e7\u00e3o dada a equa\u00e7\u00e3o ponto-inclina\u00e7\u00e3o da reta<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> A f\u00f3rmula para a equa\u00e7\u00e3o ponto-inclina\u00e7\u00e3o da reta \u00e9 a seguinte:<\/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-470b8b3f0e00bf809f6089864fe6dd44_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y -y_0=\\color{blue}\\bm{m}\\color{black}(x-x_0)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"221\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Como antes, o coeficiente<\/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> corresponde \u00e0 inclina\u00e7\u00e3o da linha. <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"pendiente-dada-la-ecuacion-implicita-de-la-recta\"><\/span> Inclina\u00e7\u00e3o dada a equa\u00e7\u00e3o impl\u00edcita da reta<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Dada a equa\u00e7\u00e3o impl\u00edcita da reta (tamb\u00e9m chamada de equa\u00e7\u00e3o geral ou cartesiana):<\/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-02f4d03229cc8bd79a81b676a8132f37_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"Ax+By+C=0\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"137\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p> A inclina\u00e7\u00e3o da linha pode ser encontrada fazendo: <\/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-94f59cc7d3c1b4ece0a70a3587fa0a77_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=-\\cfrac{A}{B}\" title=\"Rendered by QuickLaTeX.com\" height=\"39\" width=\"70\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"pendiente-dado-el-vector-director-de-la-recta\"><\/span> Inclina\u00e7\u00e3o levando em considera\u00e7\u00e3o o vetor de dire\u00e7\u00e3o da linha<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> O vetor de dire\u00e7\u00e3o da linha \u00e9 o vetor que marca sua dire\u00e7\u00e3o. Ent\u00e3o, se o vetor diretor de uma reta for:<\/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-867fb10d1409b3d95ff447f6a095219d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}}= (\\text{v}_1,\\text{v}_2)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"88\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> A inclina\u00e7\u00e3o desta reta \u00e9: <\/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-cbe7689423f29f352d6a3def8b92e945_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{\\text{v}_2}{\\text{v}_1}\" title=\"Rendered by QuickLaTeX.com\" height=\"37\" width=\"59\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"pendiente-dado-un-angulo\"><\/span> inclina\u00e7\u00e3o dado um \u00e2ngulo<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Finalmente, se uma linha forma um \u00e2ngulo<\/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-8f0b6b1a01f8fcc2f95be0364c090397_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\alpha\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> na parte positiva do eixo das abcissas (eixo X), sua inclina\u00e7\u00e3o \u00e9 equivalente \u00e0 tangente do \u00e2ngulo: <\/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-c2b29dd45ad9f0c0537a0cf6233ce929_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m = \\text{tg}(\\alpha)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"79\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"significado-de-la-pendiente-de-una-recta\"><\/span> Significado da inclina\u00e7\u00e3o de uma linha<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Com todas as informa\u00e7\u00f5es acima, j\u00e1 sabemos perfeitamente como encontrar a inclina\u00e7\u00e3o de uma reta. Mas realmente\u2026 o que significa a inclina\u00e7\u00e3o de uma linha?<\/p>\n<p> <strong>A inclina\u00e7\u00e3o de uma linha indica as unidades verticais que a linha sobe para cada unidade horizontal do gr\u00e1fico.<\/strong><\/p>\n<p> Por exemplo, na representa\u00e7\u00e3o da linha a seguir, voc\u00ea pode ver que ela avan\u00e7a 2 unidades verticais para cada unidade horizontal, pois sua inclina\u00e7\u00e3o \u00e9 igual a 2. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/equation-explicite-d-une-ligne.webp\" alt=\"qual \u00e9 a inclina\u00e7\u00e3o de uma linha\" class=\"wp-image-1455\" width=\"341\" height=\"341\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p> Al\u00e9m disso, a inclina\u00e7\u00e3o de uma linha tamb\u00e9m indica a sua inclina\u00e7\u00e3o:<\/p>\n<ul>\n<li> Se uma linha est\u00e1 aumentando (subindo), sua inclina\u00e7\u00e3o \u00e9 positiva.<\/li>\n<li> Se uma linha estiver decrescendo (descendente), sua inclina\u00e7\u00e3o ser\u00e1 negativa.<\/li>\n<li> Se uma linha for completamente horizontal, sua inclina\u00e7\u00e3o ser\u00e1 igual a 0.<\/li>\n<li> Se uma linha for completamente vertical, sua inclina\u00e7\u00e3o ser\u00e1 igual ao infinito. <\/li>\n<\/ul>\n<div class=\"wp-block-columns is-layout-flex wp-container-167\">\n<div class=\"wp-block-column is-layout-flow\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/pente-positive-ou-negative-de-la-droite.webp\" alt=\"inclina\u00e7\u00e3o de uma linha positiva ou negativa\" class=\"wp-image-1540\" width=\"470\" height=\"238\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/pente-dune-ligne-zero-ou-infinie.webp\" alt=\"inclina\u00e7\u00e3o de uma linha zero ou infinita\" class=\"wp-image-1541\" width=\"478\" height=\"238\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"posicion-relativa-de-las-rectas\"><\/span> Posi\u00e7\u00e3o relativa das linhas<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Por outro lado, a posi\u00e7\u00e3o relativa entre duas linhas tamb\u00e9m pode ser conhecida a partir das propriedades das inclina\u00e7\u00f5es:<\/p>\n<ul>\n<li> Se duas retas possuem inclina\u00e7\u00f5es diferentes, isso significa que elas <strong>se cruzam<\/strong> , ou seja, se cruzam em um ponto. <\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/secantes-pente-d-une-ligne.webp\" alt=\"linhas que se cruzam encostas distintas\" class=\"wp-image-1549\" width=\"222\" height=\"232\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p> Al\u00e9m disso, o \u00e2ngulo entre as duas linhas em suas inclina\u00e7\u00f5es pode ser calculado com a seguinte f\u00f3rmula:<\/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-95b6b3d8558ce7ad38e9652a3f9f612d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{tg}(\\alpha) = \\cfrac{m_2-m_1}{1+m_1\\cdot m_2}\" title=\"Rendered by QuickLaTeX.com\" height=\"37\" width=\"157\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<ul>\n<li> Em segundo lugar, se duas retas t\u00eam a mesma inclina\u00e7\u00e3o, isso implica que s\u00e3o <strong>paralelas<\/strong> . <\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/lignes-paralleles-pente-dune-ligne.webp\" alt=\"linhas paralelas inclina\u00e7\u00f5es iguais\" class=\"wp-image-1550\" width=\"207\" height=\"208\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<ul>\n<li> Finalmente, as inclina\u00e7\u00f5es de duas linhas <strong>perpendiculares<\/strong> ou <strong>ortogonais<\/strong> (que formam 90\u00ba) atendem \u00e0 seguinte condi\u00e7\u00e3o: <\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/lignes-perpendiculaires-pente-d-une-ligne.webp\" alt=\"linhas perpendiculares opostas \u00e0s encostas\" class=\"wp-image-1551\" width=\"183\" height=\"270\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p> Esta \u00e9 uma forma de descobrir se duas retas s\u00e3o paralelas ou perpendiculares entre si, por\u00e9m, existem outros m\u00e9todos e alguns s\u00e3o ainda mais r\u00e1pidos. Para saber mais voc\u00ea pode ir para a explica\u00e7\u00e3o da <a href=\"https:\/\/mathority.org\/pt\/definicao-de-linhas-perpendiculares-e-exemplos-de-perpendicularidade\/\">perpendicularidade<\/a> e <a href=\"https:\/\/mathority.org\/pt\/definicao-e-exemplos-de-linhas-paralelas\/\">paralelismo entre linhas<\/a> . Al\u00e9m disso, estas p\u00e1ginas tamb\u00e9m explicam como encontrar uma linha perpendicular (ou paralela) a outra. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ejercicios-resueltos-de-la-pendiente-de-una-recta\"><\/span> Problemas resolvidos da inclina\u00e7\u00e3o de uma linha<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 class=\"wp-block-heading\"> Exerc\u00edcio 1<\/h3>\n<p> Encontre a inclina\u00e7\u00e3o da reta que passa pelos dois pontos a seguir: <\/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-ae1737beb6850f4de1ea0c016cc1bc6c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1(5,6) \\qquad P_2(8,3)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"152\" 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__E4F0FE\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E4F0FE\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>veja solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Para calcular a inclina\u00e7\u00e3o da linha, voc\u00ea deve usar a f\u00f3rmula: <\/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-704148ba7570ada0ae582712ab7f93e6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m = \\cfrac{\\Delta y}{\\Delta x} = \\cfrac{y_2-y_1}{x_2-x_1}=\\cfrac{3-6}{8-5}=\\cfrac{-3}{3} = \\bm{-1}\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"316\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 2<\/h3>\n<p> Calcule a inclina\u00e7\u00e3o da reta que passa pelos dois pontos a seguir: <\/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-092707a43b0264500e478afcfe29aaea_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1(-3,1) \\qquad P_2(-2,-4)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"193\" 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__E4F0FE\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E4F0FE\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>veja solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> Para encontrar a inclina\u00e7\u00e3o da linha, voc\u00ea deve usar a f\u00f3rmula: <\/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-96bd25846027e66360f0f5125603d20f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m = \\cfrac{\\Delta y}{\\Delta x} = \\cfrac{y_2-y_1}{x_2-x_1}=\\cfrac{-4-1}{-2-(-3)}=\\cfrac{-5}{-2+3}=\\cfrac{-5}{1} = \\bm{-5}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"436\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 3<\/h3>\n<p> Qual \u00e9 a inclina\u00e7\u00e3o de cada linha? <\/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-5d405c8176957af59906c98149714570_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{lll} A) \\ y= 2x+3 &amp; \\qquad &amp; B) \\  y-3=4(x+1) \\\\[2ex] C) \\  6x+2y-7=0 &amp; \\qquad &amp; D) \\ \\begin{cases}x=3-t \\\\[2ex] y=1+2t \\end{cases} \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"102\" width=\"370\" 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__E4F0FE\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E4F0FE\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>veja solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> <strong>A)<\/strong> A reta \u00e9 expressa como uma equa\u00e7\u00e3o impl\u00edcita, ent\u00e3o <strong>sua inclina\u00e7\u00e3o \u00e9 2<\/strong> (o termo que acompanha 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> ).<\/p>\n<p class=\"has-text-align-left\"> <strong>B)<\/strong> A reta \u00e9 definida por sua equa\u00e7\u00e3o ponto-inclina\u00e7\u00e3o, ent\u00e3o <strong>sua inclina\u00e7\u00e3o \u00e9 4<\/strong> (o n\u00famero antes dos par\u00eanteses).<\/p>\n<p class=\"has-text-align-left\"> <strong>C)<\/strong> A reta est\u00e1 na forma de equa\u00e7\u00e3o impl\u00edcita, ent\u00e3o sua inclina\u00e7\u00e3o \u00e9:<\/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-0dd97ea88f88443fc8c46bde067053eb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m= - \\cfrac{A}{B} = -\\cfrac{6}{2} = \\bm{-3}\" title=\"Rendered by QuickLaTeX.com\" height=\"39\" width=\"164\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> <strong>D)<\/strong> A reta \u00e9 definida na forma de equa\u00e7\u00f5es param\u00e9tricas, portanto devemos primeiro encontrar seu vetor dire\u00e7\u00e3o e com ele podemos calcular a inclina\u00e7\u00e3o da reta. Assim, os componentes do vetor de dire\u00e7\u00e3o s\u00e3o os termos que acompanham o coeficiente <\/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-40f8b062c79839dcf7f2885a9e1469e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"t:\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"15\" 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-920bbf7e23f9c991e14e800ec8003b1b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}} = (-1,2)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"85\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> E uma vez que conhecemos o vetor diretor da reta, podemos determinar a inclina\u00e7\u00e3o da reta: <\/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-62e1424e65bcd14a34c4b366789f7b3a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m = \\cfrac{\\text{v}_2}{\\text{v}_1} = \\cfrac{2}{-1} = \\bm{-2}\" title=\"Rendered by QuickLaTeX.com\" height=\"41\" width=\"152\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">Exerc\u00edcio 4<\/h3>\n<p> Determine a inclina\u00e7\u00e3o de cada linha representada graficamente: <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exercice-dequation-de-la-ligne-explicite.webp\" alt=\"equa\u00e7\u00e3o expl\u00edcita da linha exerc\u00edcio resolvido passo a passo\" class=\"wp-image-1500\" width=\"377\" height=\"405\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E4F0FE\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E4F0FE\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"> <strong>veja solu\u00e7\u00e3o<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"> <strong>azul \u00e0 direita<\/strong><\/p>\n<p class=\"has-text-align-left\"> A linha azul aumenta em um Y para cada X, ent\u00e3o <strong>sua inclina\u00e7\u00e3o \u00e9 igual a 1.<\/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-d94dded0dc9c883f82d566d62e2d4b42_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=1\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"47\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> <strong>verde direito<\/strong><\/p>\n<p class=\"has-text-align-left\"> A linha verde aumenta tr\u00eas Y para cada X, ent\u00e3o <strong>sua inclina\u00e7\u00e3o \u00e9 3<\/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-260107cba86a7b21e919180b1130050e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=3\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"48\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> <strong>Linha Vermelha<\/strong><\/p>\n<p class=\"has-text-align-left\"> A linha vermelha diminui em dois Y para cada X, ent\u00e3o <strong>sua inclina\u00e7\u00e3o \u00e9 igual a -2<\/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-4cb69f8df8ea8c5935576ece37a640c2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=-2\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"61\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Nesta p\u00e1gina voc\u00ea encontrar\u00e1 a explica\u00e7\u00e3o mais detalhada da inclina\u00e7\u00e3o de uma reta: qual \u00e9 sua f\u00f3rmula, exemplos de c\u00e1lculo, o que significa o conceito de inclina\u00e7\u00e3o de uma reta,\u2026 Voc\u00ea tamb\u00e9m poder\u00e1 ver como identificar facilmente a inclina\u00e7\u00e3o de uma reta a partir de sua equa\u00e7\u00e3o e, al\u00e9m disso, poder\u00e1 praticar com exerc\u00edcios resolvidos &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/pt\/formula-de-inclinacao-da-linha\/\"> <span class=\"screen-reader-text\">Inclina\u00e7\u00e3o de uma linha (f\u00f3rmula)<\/span> Leia mais &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":[20],"tags":[],"class_list":["post-225","post","type-post","status-publish","format-standard","hentry","category-pontos-retas-e-planos"],"yoast_head":"<!-- This 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