Di antara pilihan jawaban berikut ini, titik yang berada di persamaan garis 2x + 3y = 12 adalah ....

<m:omathpara><m:omath><m:r>3</m:r><m:r>p&nbsp;</m:r><m:r>+ 3</m:r><m:r>q&nbsp;</m:r><m:r>= 48000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>3</m:r><m:r>p&nbsp;</m:r><m:r>+ 3</m:r><m:r>q&nbsp;</m:r><m:r>= 52000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>3</m:r><m:r>p&nbsp;</m:r><m:r>-&nbsp;</m:r><m:r>3</m:r><m:r>q&nbsp;</m:r><m:r>= 48000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>3</m:r><m:r>q&nbsp;</m:r><m:r>-&nbsp;</m:r><m:r>3</m:r><m:r>p&nbsp;</m:r><m:r>= 52000</m:r></m:omath></m:omathpara>

Risma memiliki uang Rp100.000 kemudian membeli tiga porsi mie goreng dan tiga botol minum dan menerima uang kembalian Rp52.000. Jika <m:omath><m:r>p</m:r></m:omath>&nbsp;adalah harga satu porsi mie goreng dan <m:omath><m:r>q</m:r></m:omath>&nbsp;adalah harga satu botol minum, maka persamaan linear dua variabel yang menggambarkan kondisi di atas adalah ....

<m:omathpara><m:omath><m:r>5</m:r><m:r>x&nbsp;</m:r><m:r>+ 3</m:r><m:r>y&nbsp;</m:r><m:r>= 600000</m:r></m:omath></m:omathpara>

<m:omathpara><m:omath><m:r>3</m:r><m:r>x&nbsp;</m:r><m:r>+ 5</m:r><m:r>y&nbsp;</m:r><m:r>= 600000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>5</m:r><m:r>x&nbsp;</m:r><m:r>-&nbsp;</m:r><m:r>3</m:r><m:r>y&nbsp;</m:r><m:r>= 600000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>3</m:r><m:r>x&nbsp;</m:r><m:r>-&nbsp;</m:r><m:r>5</m:r><m:r>y&nbsp;</m:r><m:r>= 600000</m:r></m:omath></m:omathpara>

Harga tiga buah tas dan lima buah topi adalah Rp600.000. Jika <m:omath><m:r>x</m:r></m:omath>&nbsp;adalah harga satu buah tas dan <m:omath><m:r>y</m:r></m:omath>&nbsp;adalah harga satu buah topi, maka persamaan linear dua variabel yang menggambarkan kondisi di atas adalah ....

<m:omathpara><m:omath><m:r>5</m:r><m:r>p&nbsp;</m:r><m:r>+ 4</m:r><m:r>q&nbsp;</m:r><m:r>= 5000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>4</m:r><m:r>p&nbsp;</m:r><m:r>+ 5</m:r><m:r>q&nbsp;</m:r><m:r>= 5000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>5p - 4</m:r><m:r>q&nbsp;</m:r><m:r>= 5000&nbsp;</m:r></m:omath></m:omathpara>&nbsp;

<m:omathpara><m:omath><m:r>4</m:r><m:r>q&nbsp;</m:r><m:r>-&nbsp;</m:r><m:r>5</m:r><m:r>p&nbsp;</m:r><m:r>= 5000</m:r></m:omath></m:omathpara>

Adi memiliki lima buah pulpen yang total harganya Rp5.000 lebih murah dari harga empat buah pulpen yang dimiliki oleh Budi. Jika <m:omath><m:r>p</m:r></m:omath>&nbsp;adalah harga satu pulpen milik Adi dan <m:omath><m:r>q</m:r></m:omath>&nbsp;adalah harga satu pulpen milik Budi, maka persamaan linear dua variabel yang menggambarkan kondisi di atas adalah ....

<img align="middle" alt="begin mathsize 14px style 7 p plus 2 q equals 15 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»7«/mn»«mi»p«/mi»«mo»+«/mo»«mn»2«/mn»«mi»q«/mi»«mo»=«/mo»«mn»15«/mn»«/mrow»«/mstyle»«/math»" height="13" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="87" />&nbsp;

<img align="middle" alt="begin mathsize 14px style 7 q minus 2 p equals 15 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»7«/mn»«mi»q«/mi»«mo»-«/mo»«mn»2«/mn»«mi»p«/mi»«mo»=«/mo»«mn»15«/mn»«/mrow»«/mstyle»«/math»" height="13" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFYAAAANCAYAAAAzH5nDAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAKIPF7gAAAAblJREFUeNpjYICA/zgwPYEPEB8G4l9QehoQ8zAMHFAD4logvoBDnqwwYwPiDjp7ZAsQ2wMxE5SfDMRrBjBgFwNxIp7AIivhgWJKnmFgASiAvzEMPKBawGoAcSMeeT8gPgfEH4C4EohvAbEsDTwEiti7WMRvAHEQEJ+BBnwjEQHzn4LijmoBuw2I+XDI5QHxfGjZB1IzCYh/0MhDm4A4AEsq/gPEc6GRyQQtiz0GKMWC6oOnQLwUiA3wGZKIJwWIAvFDpDIQBCyBeD+VPcIDdagfFjlzaMWGXulNGYCAhQEuaAIA5WIXXGXaXWgAYgPh0AIdGUQC8UIqekIciJcDsQoeNyzE4oaOASgKsCU8rC2IUKincIF4LCkDxM+gUqAKAvE6KI0LTMBiH6jlID2AKRYG+KDlPwZYhaVMQwagMm0vNKuCPN8MxC+B2ItKHgCVqToE1KyDugFWvoLK/KwBahXMR2o5KQHxBmiOwgCv8VRaMGANLS7uA3EsNGC5qOgBQln1NTRngey/AmXTMkDxuSUZ6p5f0PI1kloWgzoRn+jYngTZ945hBAAvaNYcrvYNGIiHtmOHq30UAQBO7YSkTT/Q9QAAAKd0RVh0TWF0aE1MADxtYXRoIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk4L01hdGgvTWF0aE1MIj48bXN0eWxlIG1hdGhzaXplPSIxNHB4Ij48bW4+NzwvbW4+PG1pPnE8L21pPjxtbz4tPC9tbz48bW4+MjwvbW4+PG1pPnA8L21pPjxtbz49PC9tbz48bW4+MTU8L21uPjwvbXN0eWxlPjwvbWF0aD5lecXWAAAAAElFTkSuQmCC" style="max-width: none; vertical-align: -3px;" width="86" />&nbsp;&nbsp;

<img align="middle" alt="begin mathsize 14px style 2 p minus 7 q equals 15 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»2«/mn»«mi»p«/mi»«mo»-«/mo»«mn»7«/mn»«mi»q«/mi»«mo»=«/mo»«mn»15«/mn»«/mrow»«/mstyle»«/math»" height="13" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFYAAAANCAYAAAAzH5nDAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAKIPF7gAAAAbFJREFUeNpjYIAAHyA+DMS/oPQ0IOZhoC/4jwMPFFAD4logvkCJe7cAsT0QM0H5yUC8hmFgARsQdwyg/YuBOBFP5JIV6aAA/jbAAQtKLfIMAw+oGrAgD93FIn4DiIOA+Aw04Btp5BkNAmb7AfE5IP4AxJVAfAuIZUnMssQWNVQN2E1AHIAlFf8B4rlQTzBBy2IPGnhoGxDz4ZDLA+L50DoApGYSEP8YoBQLqpOeAvFSIDbAZwgPVJEfFjlzaMWGDECV3hQqeyQRT2oVBeKHSHUBCFgC8f4BCFgY4IImQlAOcsGmQByIlwOxCg4DwoF4IZpYJJUrGCZoESSKxw2LsbhhIRmtDUqLAmyRjtGCEATidVAaF5gAxBloYqCWgzQVAzYUGrm4QDyWHDIFi7vomWJhgA9aB2GUqToENIICfi9S+Qoq67Ko7IlVWMp2ZCALdQMPNBE0A/FLIPYagICdj9RqUQLiDdAcRXJj9zU0Rd0H4itQNrXBazyVFgxYQ4sLkDtioQHLRacOCzJIhrr3F7R8jSS3sf6OYfABkLs+MQxh4AUtCkbdRWUQD20vjrqLSAAAQBuEpIVvll4AAACndEVYdE1hdGhNTAA8bWF0aCB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMTk5OC9NYXRoL01hdGhNTCI+PG1zdHlsZSBtYXRoc2l6ZT0iMTRweCI+PG1uPjI8L21uPjxtaT5wPC9taT48bW8+LTwvbW8+PG1uPjc8L21uPjxtaT5xPC9taT48bW8+PTwvbW8+PG1uPjE1PC9tbj48L21zdHlsZT48L21hdGg+lO2fIQAAAABJRU5ErkJggg==" style="max-width: none; vertical-align: -3px;" width="86" />&nbsp;&nbsp;

<img align="middle" alt="begin mathsize 14px style 2 p plus 7 q equals 15 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»2«/mn»«mi»p«/mi»«mo»+«/mo»«mn»7«/mn»«mi»q«/mi»«mo»=«/mo»«mn»15«/mn»«/mrow»«/mstyle»«/math»" height="13" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="87" />&nbsp;

Tiga tahun yang lalu, umur Septi <img align="middle" alt="begin mathsize 14px style 3 1 half end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»3«/mn»«mfrac»«mn»1«/mn»«mn»2«/mn»«/mfrac»«/mrow»«/mstyle»«/math»" data-latex="\style{font-size:14px}{3\frac12}" height="30" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAeCAYAAAA2Lt7lAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAATRJrTQAAAAORJREFUeNpjYCAfqAFxLRBfYKARWAzEiUD8n4HGYNSCUQvoZIEfEJ8B4l9A/A2IdwCxKREGo2OcYAMQmwMxExCzAHEeED+kpbdBlrymhcEgH+gB8Vwg9qFFZIHwYyCWp1XQgHxgCcRroHFCTMT+JzXCQUAUiG/RMpJBPvlCTQO3IAUJHxB3AfEkalrgA81of4D4KRC3QpPq8AUgHx+GFi0gehoQ81A7zuyhiQEEkqFJm6ap7hstLQDl/Lu0tGATEAfQwmBQxC6F1idUB+JAvByIVWhhuCAQr4PSNAtzHVpX9EQV0QDR80AmlNCWOQAAAI10RVh0TWF0aE1MADxtYXRoIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk4L01hdGgvTWF0aE1MIj48bXN0eWxlIG1hdGhzaXplPSIxNHB4Ij48bW4+MzwvbW4+PG1mcmFjPjxtbj4xPC9tbj48bW4+MjwvbW4+PC9tZnJhYz48L21zdHlsZT48L21hdGg+I7+dFgAAAABJRU5ErkJggg==" style="max-width: none; vertical-align: -11px;" width="24" />&nbsp;kali umur Tuti. Jika <img align="middle" alt="p" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»p«/mi»«/math»" data-latex="p" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAMCAYAAABbayygAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAHXkAHPQAAAHZJREFUeNpjYECAG0AcBMRngPgbEDcyYAFMQPwHiOcCsSyUPw2IPdAVmgPxYTQxHyCegq4wHIgXoolFAnEHusIJQJyBJrYGiKXRFa4D4r1I7ssD4ixsnnkNxKFAfB+Ir0DZGIANiN8xEAG8oFYTBPFAPImB7gAAZSET/5m/zB8AAABJdEVYdE1hdGhNTAA8bWF0aCB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMTk5OC9NYXRoL01hdGhNTCI+PG1pPnA8L21pPjwvbWF0aD6bDTdIAAAAAElFTkSuQmCC" style="max-width: none;" /> adalah umur Septi saat ini dan <img align="middle" alt="q" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»q«/mi»«/math»" data-latex="q" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAMCAYAAABbayygAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAHXkAHPQAAAIFJREFUeNpjYEAFfkB8Dog/AHElEN8CYlk0NQx5QDwfiHmAmA+IJwHxD3RFokD8EIiZkMQsgXg/usJwIF6MJhYJxAvRFcYD8RQ0MRA/A10hyMF7oe4TBOJmIH4JxF4MWIA1EN8F4vtAHAtVyMVAALAB8ScGIgDIynXEKIyHhiMNAQD4+hTWjv4wVwAAAEl0RVh0TWF0aE1MADxtYXRoIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk4L01hdGgvTWF0aE1MIj48bWk+cTwvbWk+PC9tYXRoPkab7s0AAAAASUVORK5CYII=" style="max-width: none;" /> adalah umur Tuti saat ini, maka persamaan linear dua variabel yang menggambarkan kondisi di atas adalah ....