{"id":253,"date":"2023-07-10T10:30:09","date_gmt":"2023-07-10T10:30:09","guid":{"rendered":"https:\/\/mathority.org\/ja\/2%e6%9c%ac%e3%81%ae%e7%b7%9a%e3%81%ae%e9%96%93%e3%81%ae%e4%ba%a4%e7%82%b9%e3%81%be%e3%81%9f%e3%81%af%e4%ba%a4%e7%82%b9%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b\/"},"modified":"2023-07-10T10:30:09","modified_gmt":"2023-07-10T10:30:09","slug":"2%e6%9c%ac%e3%81%ae%e7%b7%9a%e3%81%ae%e9%96%93%e3%81%ae%e4%ba%a4%e7%82%b9%e3%81%be%e3%81%9f%e3%81%af%e4%ba%a4%e7%82%b9%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/2%e6%9c%ac%e3%81%ae%e7%b7%9a%e3%81%ae%e9%96%93%e3%81%ae%e4%ba%a4%e7%82%b9%e3%81%be%e3%81%9f%e3%81%af%e4%ba%a4%e7%82%b9%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b\/","title":{"rendered":"2\u3064\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9\u307e\u305f\u306f\u4ea4\u70b9\u3092\u8a08\u7b97\u3057\u307e\u3059"},"content":{"rendered":"<p>\u3053\u3053\u3067\u306f\u30012 \u3064\u306e\u7dda\u306e\u9593\u306e\u30ab\u30c3\u30c8\u30dd\u30a4\u30f3\u30c8 (\u307e\u305f\u306f\u4ea4\u70b9) \u304c\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u308b\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u4f8b\u3082\u8868\u793a\u3055\u308c\u3001\u6bb5\u968e\u7684\u306b\u89e3\u6c7a\u3055\u308c\u305f\u6f14\u7fd2\u3067\u7df4\u7fd2\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfque-es-el-punto-de-corte-o-interseccion-entre-dos-rectas\"><\/span> 2 \u672c\u306e\u7dda\u306e\u9593\u306e\u30ab\u30c3\u30c8\u30aa\u30d5\u307e\u305f\u306f\u4ea4\u70b9\u306f\u4f55\u3067\u3059\u304b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> 2 \u3064\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9 (\u307e\u305f\u306f\u5207\u65ad) \u306f\u30012 \u3064\u306e\u7570\u306a\u308b\u7dda\u304c\u4ea4\u5dee\u3059\u308b\u70b9\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u7570\u306a\u308b 2 \u3064\u306e\u7dda\u306b\u4ea4\u70b9\u3084\u5207\u65ad\u70b9\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u305d\u308c\u3089\u304c 1 \u70b9\u3067\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 <\/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\/point-dintersection-ou-de-coupe-1.webp\" alt=\"\u4ea4\u5dee\u70b9\u307e\u305f\u306f\u5207\u65ad\u70b9\" class=\"wp-image-2958\" width=\"222\" height=\"241\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u5e73\u884c\u7dda\u306f\u3069\u306e\u70b9\u3067\u3082\u63a5\u89e6\u3057\u306a\u3044\u305f\u3081\u30012 \u3064\u306e\u7dda\u304c\u70b9\u3067\u4ea4\u5dee\u3059\u308b\u306b\u306f\u3001\u305d\u308c\u3089\u306e\u7dda\u304c\u4ea4\u5dee\u3059\u308b\u7dda\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u4ea4\u5dee\u3059\u308b\u7dda\u304c\u4f55\u3067\u3042\u308b\u304b\u3092\u6b63\u78ba\u306b\u899a\u3048\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001 <a href=\"https:\/\/mathority.org\/ja\/\u4ea4\u5dee\u3059\u308b\u7dda\u306e\u4f8b\/\">\u300c\u4ea4\u5dee\u3059\u308b\u7dda\u306e\u4f8b\u300d<\/a>\u30da\u30fc\u30b8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u7a2e\u985e\u306e\u7dda\u3068\u306f\u4f55\u304b\u3001\u304a\u3088\u3073 2 \u3064\u306e\u7dda\u304c\u4ea4\u5dee\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfcomo-calcular-el-punto-de-corte-o-interseccion-entre-dos-rectas\"><\/span> 2 \u672c\u306e\u7dda\u306e\u9593\u306e\u30ab\u30c3\u30c8\u30aa\u30d5\u307e\u305f\u306f\u4ea4\u70b9\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> 2 \u672c\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9\u307e\u305f\u306f\u4ea4\u70b9\u306e\u5b9a\u7fa9\u3092\u7406\u89e3\u3057\u305f\u3089\u3001\u6b21\u306b\u3001\u305d\u306e\u70b9\u304c\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u308b\u304b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p> 2 \u3064\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9 (\u307e\u305f\u306f\u4ea4\u70b9) \u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001\u307e\u305a 2 \u3064\u306e\u7dda\u304c\u5e73\u884c\u3067\u306f\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u30022 \u3064\u306e\u7dda\u304c\u5e73\u884c\u306a\u5834\u5408\u3001\u3069\u306e\u70b9\u3067\u3082\u4ea4\u5dee\u3059\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u6700\u521d\u306b\u3001 <a href=\"https:\/\/mathority.org\/ja\/\u5e73\u884c\u7dda\u306e\u5b9a\u7fa9\u3068\u4f8b\/\">2 \u3064\u306e\u7dda\u304c\u5e73\u884c\u3067\u3042\u308b\u304b<\/a>\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u65b9\u6cd5\u3092\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u65b9\u6cd5\u3092\u899a\u3048\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u3082\u3046\u4e00\u5ea6\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p> <strong>2 \u672c\u306e\u7dda\u304c\u5e73\u884c\u3067\u306f\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u3063\u305f\u3089\u30012 \u672c\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9 (\u307e\u305f\u306f\u4ea4\u70b9) \u3092\u6c7a\u5b9a\u3059\u308b\u306b\u306f\u3001\u5404\u7dda\u306e\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u308b\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u524d\u8a18\u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u7d50\u679c\u306f\u30012 \u672c\u306e\u76f4\u7dda\u9593\u306e\u4ea4\u70b9 (\u307e\u305f\u306f\u4ea4\u70b9) \u306e\u5ea7\u6a19\u306b\u306a\u308a\u307e\u3059\u3002<\/strong> <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ejemplo-de-como-hallar-el-punto-de-corte-o-interseccion-entre-dos-rectas\"><\/span> 2 \u672c\u306e\u7dda\u306e\u4ea4\u70b9\u307e\u305f\u306f\u4ea4\u70b9\u3092\u898b\u3064\u3051\u308b\u65b9\u6cd5\u306e\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4f8b\u3068\u3057\u3066\u30012 \u3064\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9 (\u307e\u305f\u306f\u4ea4\u70b9) \u3092\u898b\u3064\u3051\u308b\u65b9\u6cd5\u304c\u308f\u304b\u308b\u3088\u3046\u306b\u554f\u984c\u3092\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u6b21\u306e 2 \u3064\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9\u3092\u898b\u3064\u3051\u307e\u3059\u3002<\/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-28b417b26c53c9bdf105e231f0e20d5c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r: \\ y=4x-1 \\qquad \\qquad s: \\ y=-2x+5\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"307\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u307e\u305a\u3001\u3053\u308c\u3089\u306e\u7dda\u306f\u50be\u304d\u304c\u7570\u306a\u308b\u305f\u3081\u5e73\u884c\u3067\u306f\u306a\u304f\u3001\u4e21\u65b9\u3068\u3082\u30c7\u30ab\u30eb\u30c8\u5e73\u9762\u4e0a\u306e\u70b9\u3067\u4ea4\u5dee\u3057\u307e\u3059\u3002<\/p>\n<p>\u305d\u308c\u3092\u77e5\u308b\u306b\u306f\u3001\u5404\u76f4\u7dda\u306e\u65b9\u7a0b\u5f0f\u3067\u69cb\u6210\u3055\u308c\u308b\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/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-9a1cdd55c61dc9a42ce97d3f66759831_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left. \\begin{array}{l} y=4x-1 \\\\[2ex]  y=-2x+5 \\end{array} \\right\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"117\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u3053\u306e\u7279\u5b9a\u306e\u30b1\u30fc\u30b9\u3067\u306f\u30012 \u3064\u306e\u672a\u77e5\u6570\u304c\u3042\u308b\u305f\u3081\u3001\u7b49\u5316\u6cd5\u306b\u3088\u3063\u3066\u30b7\u30b9\u30c6\u30e0\u3092\u89e3\u304d\u307e\u3059\u3002<\/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-0af556714940c351c933bba8cf840796_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u306f\u3059\u3067\u306b\u89e3\u6c7a\u3055\u308c\u3066\u3044\u307e\u3059 (\u4e21\u65b9\u306e\u884c\u304c\u660e\u793a\u7684\u306a\u65b9\u7a0b\u5f0f\u5f62\u5f0f\u306b\u306a\u3063\u3066\u3044\u307e\u3059)\u3002<\/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-3ead38dffec6d14d4d336cafeddd9985_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y= y\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"42\" 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-5fd49c4e816d164da522db903a218422_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"4x-1=-2x+5\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"136\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p>\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3057\u307e\u3059<\/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-845f2902b8bebf60c3c7372a7fbe4d02_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x:\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"19\" 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-d5ccd87a6d4b7404804117f583960421_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"4x+2x=5+1\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"122\" 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-c9c29e31dbe2952c3f947c7999aaea32_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"6x=6\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"52\" 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-9d7383f9dc9ffbcbc54b429212e16736_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x = \\cfrac{6}{6}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"45\" 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-acd4c7b40e2b9be2b7c63cb68371fbc5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x = 1\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"42\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u305d\u3057\u3066\u3001\u305d\u308c\u304c\u3069\u308c\u307b\u3069\u306e\u4fa1\u5024\u304c\u3042\u308b\u304b\u3092\u77e5\u3063\u305f\u3089\u3001<\/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-038741496726a75b03e91a2e030b0287_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x,\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"14\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u305d\u306e\u5024\u3092\u5f0f\u306b\u4ee3\u5165\u3057\u3066\u3001\u6b21\u306e\u5024\u3092\u898b\u3064\u3051\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-526e84c5b87e970b9045246e059785fe_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y:\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"18\" 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-7f81265d11f37b1daceb37a8071db978_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y=4x-1 \\ \\xrightarrow{x \\ = \\ 1} \\ y=4\\cdot 1-1\" title=\"Rendered by QuickLaTeX.com\" height=\"23\" width=\"245\" 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-7e2148e1d93e9c008f474956d2ddaba1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y =4-1\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"71\" 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-5161fd7e02970f7e86370e8603358bc9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y =3\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"42\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u30012 \u3064\u306e\u7dda\u306e\u4ea4\u70b9\u306e\u5ea7\u6a19\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/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-5018478ba24875ae2ab915350b9ea7ed_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{(1,3)}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"38\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ejercicios-resueltos-del-punto-de-corte-o-interseccion-entre-dos-rectas\"><\/span> 2\u3064\u306e\u7dda\u306e\u4ea4\u70b9\u307e\u305f\u306f\u4ea4\u70b9\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3057\u307e\u3057\u305f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 1<\/h3>\n<p>\u6b21\u306e2\u3064\u306e\u7dda\u306e\u4ea4\u70b9\u307e\u305f\u306f\u4ea4\u70b9\u306f\u4f55\u3067\u3059\u304b? <\/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-a970cbe339e28aae29cb501cd878a42e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r: \\ y=x+5 \\qquad \\qquad s: \\ y=2x+3\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"285\" style=\"vertical-align: -4px;\"><\/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>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u307e\u305a\u3001\u3053\u308c\u3089\u306e\u7dda\u306f\u50be\u304d\u304c\u7570\u306a\u308b\u305f\u3081\u5e73\u884c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u30012 \u672c\u306e\u7dda\u306f\u5e73\u9762\u4e0a\u306e\u3069\u3053\u304b\u306e\u70b9\u3067\u4ea4\u308f\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-left\">\u4e0a\u8a18\u306e\u70b9\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3001\u5404\u76f4\u7dda\u306e\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u308b\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/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-cb0689e91892970c4231287d01e21bce_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left. \\begin{array}{l} y=x+5 \\\\[2ex]  y=2x+3 \\end{array} \\right\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"104\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3053\u306e\u5834\u5408\u30012 \u3064\u306e\u672a\u77e5\u6570\u304c\u3042\u308b\u305f\u3081\u3001\u7b49\u5316\u6cd5\u306b\u3088\u3063\u3066\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304d\u307e\u3059\u3002<\/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-0af556714940c351c933bba8cf840796_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u306f\u3059\u3067\u306b\u89e3\u6c7a\u3055\u308c\u3066\u3044\u307e\u3059 (\u4e21\u65b9\u306e\u884c\u304c\u660e\u793a\u7684\u306a\u65b9\u7a0b\u5f0f\u5f62\u5f0f\u306b\u306a\u3063\u3066\u3044\u307e\u3059)\u3002 <\/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-3ead38dffec6d14d4d336cafeddd9985_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y= y\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"42\" 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-6210171e144520a0d88adf32ce86864f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x+5=2x+3\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"114\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3057\u307e\u3059<\/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-845f2902b8bebf60c3c7372a7fbe4d02_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x:\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"19\" 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-a4b1dadd6581fbbe04e0b2ecd606d88b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x-2x=3-5\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"113\" 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-3f0d6d05bef09b80057fe52c02cec17f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-x=-2\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"69\" 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-c657687cbbf5ea9a7545edb42190e592_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=2\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"42\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u305d\u3057\u3066\u3001\u305d\u308c\u304c\u3069\u308c\u307b\u3069\u306e\u4fa1\u5024\u304c\u3042\u308b\u304b\u3092\u77e5\u3063\u305f\u3089\u3001<\/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-038741496726a75b03e91a2e030b0287_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x,\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"14\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u305d\u306e\u5024\u3092\u5f0f\u306b\u4ee3\u5165\u3057\u3066\u3001\u6b21\u306e\u5024\u3092\u898b\u3064\u3051\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-526e84c5b87e970b9045246e059785fe_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y:\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"18\" 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-62c4fb120c843ead72589c392af4365a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y=x+5 \\ \\xrightarrow{x \\ = \\ 2} \\ y=2+5\" title=\"Rendered by QuickLaTeX.com\" height=\"23\" width=\"215\" 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-d32b70220482c8639a87bc6b718d2c52_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y =7\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"42\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u30012 \u3064\u306e\u7dda\u306e\u4ea4\u70b9\u306e\u5ea7\u6a19\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/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-13575229a0823916384ec9a4a56d3c0b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{(2,7)}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"38\" 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\">\u6f14\u7fd2 2<\/h3>\n<p>\u6b21\u306e 2 \u3064\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9\u307e\u305f\u306f\u4ea4\u70b9\u3092\u898b\u3064\u3051\u307e\u3059\u3002 <\/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-cc4a7a4fa2d7845cbe7cd6e453363707_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r: \\ y=-3x+1 \\qquad \\qquad s: \\ 4x+2y+6=0\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"347\" style=\"vertical-align: -4px;\"><\/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>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u6a29\u5229<\/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-ae1901659f469e6be883797bfd30f4f8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"s\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u3053\u308c\u306f\u6697\u9ed9\u7684\u306a (\u307e\u305f\u306f\u4e00\u822c\u7684\u306a) \u65b9\u7a0b\u5f0f\u306e\u5f62\u5f0f\u3067\u8868\u73fe\u3055\u308c\u308b\u305f\u3081\u3001\u307e\u305a\u305d\u308c\u3092\u660e\u793a\u7684\u306a\u65b9\u7a0b\u5f0f\u306e\u5f62\u5f0f\u3067\u6e21\u3057\u3066\u3001\u305d\u306e\u50be\u304d\u306e\u5024\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 <\/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-a8e356b2530399ec10ca393fe36ff6cc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"4x+2y+6=0\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"122\" 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-a20ea17433a797efb58bcd820d2fd7b1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"2y=-4x-6\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"105\" 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-6ebc6eea43eff615514706f343c16b63_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y=\\cfrac{-4x-6}{2}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"107\" 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-b754ae8eb949f8f8d85ba36ebabb52d4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y=-2x-3\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"96\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u30012 \u3064\u306e\u7dda\u306e\u50be\u304d\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u305d\u308c\u3089\u306e\u9593\u306b\u4ea4\u70b9\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-left\">\u4e0a\u8a18\u306e\u70b9\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3001\u5404\u76f4\u7dda\u306e\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u308b\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/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-cc914ee4de930feec594f04f5867ba7d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left. \\begin{array}{l} y=-3x+1\\\\[2ex]  y=-2x-3 \\end{array} \\right\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"117\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u7b49\u5316\u6cd5\u306b\u3088\u3063\u3066\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304d\u307e\u3059\u3002 <\/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-3ead38dffec6d14d4d336cafeddd9985_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y= y\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"42\" 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-67618b09d747ac741f072fcf8d26510d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-3x+1=-2x-3\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"149\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3057\u307e\u3059<\/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-845f2902b8bebf60c3c7372a7fbe4d02_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x:\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"19\" 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-ce17bbde97e648413518cab9f4f9e4c3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-3x+2x=-3-1\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"148\" 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-bf3be4b88214ed0d52840c08d288f322_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-x=-4\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"70\" 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-2145acc2878ed61214887e120f2485b7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=4\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"43\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u305d\u3057\u3066\u3001\u305d\u308c\u304c\u3069\u308c\u307b\u3069\u306e\u4fa1\u5024\u304c\u3042\u308b\u304b\u3092\u77e5\u3063\u305f\u3089\u3001<\/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-038741496726a75b03e91a2e030b0287_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x,\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"14\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u305d\u306e\u5024\u3092\u3044\u305a\u308c\u304b\u306e\u5f0f\u306b\u4ee3\u5165\u3057\u3066\u3001\u6b21\u306e\u5024\u3092\u898b\u3064\u3051\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-526e84c5b87e970b9045246e059785fe_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y:\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"18\" 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-149ce067b48b4a751e6992a2088986b5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y=-3x+1 \\ \\xrightarrow{x \\ = \\ 4} \\ y=-3\\cdot 4+1\" title=\"Rendered by QuickLaTeX.com\" height=\"23\" width=\"273\" 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-d1153677d6a88ee3880379d52254ff89_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y =-12+1\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"94\" 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-9ac3626102819d91b5b46b36ec9a1393_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y =-11\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"64\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u30012 \u3064\u306e\u7dda\u306e\u4ea4\u70b9\u306e\u5ea7\u6a19\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/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-389476127c04a48b9a98832495e26542_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{(4,-11)}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"61\" 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\">\u6f14\u7fd2 3<\/h3>\n<p>\u6b21\u306e 2 \u3064\u306e\u7dda\u306e\u9593\u306e\u4ea4\u70b9\u307e\u305f\u306f\u4ea4\u70b9\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002 <\/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-4493e6356538f2224d935cdff1a5a0e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle r: \\ \\begin{cases} x=1+2t \\\\[1.7ex] y=-2-3t \\end{cases} \\qquad \\qquad s: \\ 4x+2y+8=0\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"382\" 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>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u307e\u305a\u3001\u3053\u308c\u3089\u304c 2 \u672c\u306e\u5e73\u884c\u7dda\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u884c\u3046\u306b\u306f\u30012 \u3064\u306e\u76f4\u7dda\u306e\u65b9\u5411\u30d9\u30af\u30c8\u30eb\u304c\u6bd4\u4f8b\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-left\">\u6a29\u5229<\/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-c409433a9e2dfcdb83360a974d243f18_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u306f\u30d1\u30e9\u30e1\u30c8\u30ea\u30c3\u30af\u65b9\u7a0b\u5f0f\u306e\u5f62\u5f0f\u3067\u5b9a\u7fa9\u3055\u308c\u308b\u305f\u3081\u3001\u305d\u306e\u65b9\u5411\u30d9\u30af\u30c8\u30eb\u306e\u6210\u5206\u306f\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u524d\u306e\u4fc2\u6570\u306b\u306a\u308a\u307e\u3059\u3002<\/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-948961a863b93df17727aed0b8b1b323_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{r} =(2,-3)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"85\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u305d\u3057\u3066\u305d\u306e\u4e00\u65b9\u3067\u3001\u30e9\u30a4\u30f3\u306f<\/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-ae1901659f469e6be883797bfd30f4f8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"s\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u306f\u6697\u9ed9\u7684\u306a\u65b9\u7a0b\u5f0f\u306e\u5f62\u5f0f\u3067\u8a18\u8ff0\u3055\u308c\u308b\u305f\u3081\u3001\u305d\u306e\u65b9\u5411\u30d9\u30af\u30c8\u30eb\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/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-20cce1ab2b76722e40ad11bfd5432b6f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{s} =(-B,A)=(-2,4)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"171\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> 2 \u3064\u306e\u65b9\u5411\u30d9\u30af\u30c8\u30eb\u306e\u6210\u5206\u306f\u4e92\u3044\u306b\u6bd4\u4f8b\u3057\u306a\u3044\u305f\u3081\u30012 \u3064\u306e\u76f4\u7dda\u306f\u5e73\u884c\u306b\u306a\u308a\u307e\u305b\u3093\u3002<\/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-579b1121219ef4e23ebf4dd050fd8f5f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\cfrac{2}{-2} \\neq \\cfrac{-3}{4} \\ \\longrightarrow \\ r \\ \\cancel{\\parallel} \\ s\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"166\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u305d\u3057\u3066 2 \u3064\u306e\u7dda\u306f\u5e73\u884c\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u3053\u308c\u306f\u5b9f\u969b\u306b\u305d\u308c\u3089\u306e\u9593\u306b\u4ea4\u70b9\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u308c\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3001\u5404\u76f4\u7dda\u306e\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u308b\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/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-4493e6356538f2224d935cdff1a5a0e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle r: \\ \\begin{cases} x=1+2t \\\\[1.7ex] y=-2-3t \\end{cases} \\qquad \\qquad s: \\ 4x+2y+8=0\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"382\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3053\u306e\u5834\u5408\u3001\u6b21\u306e\u884c\u306e\u3088\u3046\u306b\u3001<\/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-c409433a9e2dfcdb83360a974d243f18_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u306f\u30d1\u30e9\u30e1\u30c8\u30ea\u30c3\u30af\u65b9\u7a0b\u5f0f\u306e\u5f62\u5f0f\u3067\u3042\u308b\u305f\u3081\u3001\u5404\u30d1\u30e9\u30e1\u30c8\u30ea\u30c3\u30af\u65b9\u7a0b\u5f0f\u306e\u5f0f\u3092\u4ed6\u306e\u884c\u306e\u65b9\u7a0b\u5f0f\u306b\u4ee3\u5165\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/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-d88b687bf48b9d10a26bac5451c7e8b3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"4(1+2t)+2(-2-3t)+8=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"236\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u6b21\u306b\u3001\u7d50\u679c\u306e\u65b9\u7a0b\u5f0f\u3092\u89e3\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002 <\/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-32756a2ba23a8bcb7c6b15939040465f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"4+8t-4-6t+8=0\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"176\" 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-d4c52dff39a888d82acf8fac68eb4fcc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"8t-6t=-8-4+4\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"160\" 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-de593446ba488dfae45728357be5b677_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"2t=-8\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"62\" 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-7314acbcd6829cda85877660beaa4228_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"t=\\cfrac{-8}{2}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"63\" 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-1acfbba41e2198fe16fba49080a61f1e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"t=-4\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"53\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u306e\u5024\u3092\u7f6e\u304d\u63db\u3048\u307e\u3059<\/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-b4e3cbf5d4c5c6d9b702dd139f14c147_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"t\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"6\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u30d1\u30e9\u30e1\u30c8\u30ea\u30c3\u30af\u65b9\u7a0b\u5f0f\u3067\u6b21\u306e\u5f0f\u3092\u898b\u3064\u3051\u3066\u3001\u5207\u65ad\u70b9\u306e\u5ea7\u6a19\u3092\u898b\u3064\u3051\u307e\u3059\u3002 <\/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-fd959e49e9461d7dd34898128ee1d43e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle r: \\ \\begin{cases} x=1+2t \\\\[1.7ex] y=-2-3t \\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"137\" 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-6c298c87a64b01e8495d050d39d48b5b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{cases} x=1+2(-4)=1-8=-7 \\\\[1.7ex] y=-2-3(-4)=-2+12=10\\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"263\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u30012 \u3064\u306e\u7dda\u306e\u4ea4\u70b9\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/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-b8679413d67b2db10c8226e53fd08fb2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{(-7,10)}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"60\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3053\u3067\u306f\u30012 \u3064\u306e\u7dda\u306e\u9593\u306e\u30ab\u30c3\u30c8\u30dd\u30a4\u30f3\u30c8 (\u307e\u305f\u306f\u4ea4\u70b9) \u304c\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u308b\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u4f8b\u3082\u8868\u793a\u3055\u308c\u3001\u6bb5\u968e\u7684\u306b\u89e3\u6c7a\u3055\u308c\u305f\u6f14\u7fd2\u3067\u7df4\u7fd2\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 2 \u672c\u306e\u7dda\u306e\u9593\u306e\u30ab\u30c3\u30c8\u30aa\u30d5\u307e\u305f\u306f\u4ea4\u70b9\u306f\u4f55\u3067\u3059\u304b? 2 \u3064\u306e\u7dda\u306e &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ja\/2%e6%9c%ac%e3%81%ae%e7%b7%9a%e3%81%ae%e9%96%93%e3%81%ae%e4%ba%a4%e7%82%b9%e3%81%be%e3%81%9f%e3%81%af%e4%ba%a4%e7%82%b9%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b\/\"> <span 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