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<p style="text-align: justify;"><span style="color: #003300;"><strong><span style="font-family: arial,helvetica,sans-serif;" data-mce-mark="1">Resolent el sistema per substitució determina en quin punt es tallen les dues <span class="nolink">rectes</span> d'equacions:</span></strong></span></p> <p style="text-align: center;"><br style="font-weight: bold; color: #0033ff;" /><span style="color: #003300;"><strong><span style="font-family: arial,helvetica,sans-serif;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»r«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8801;«/mo»«mfrac mathcolor=¨#003300¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»n«/mi»«mn mathvariant=¨bold¨»1«/mn»«/mrow»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»u_«/mi»«mn mathvariant=¨bold¨»1«/mn»«/mrow»«/mfrac»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mfrac mathcolor=¨#003300¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»n«/mi»«mn mathvariant=¨bold¨»2«/mn»«/mrow»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»u_«/mi»«mn mathvariant=¨bold¨»2«/mn»«/mrow»«/mfrac»«/mstyle»«/math» i «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»s«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8801;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»e_«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»2«/mn»«/mstyle»«/math»?</span></strong></span></p> <p><span style="font-family: arial,helvetica,sans-serif;"><span style="color: #ff3300; font-weight: bold;">Format de la resposta:</span> </span></p> <p><span style="font-family: arial,helvetica,sans-serif;">a) Valor de k =-2/3</span></p> <p><span style="font-family: arial,helvetica,sans-serif;">b) Punt de tall: (-1/3,5/3), simplificat i amb parèntesis</span></p>
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<p><span style="color: #800000;"><strong><span style="font-size: medium;">Les rectes es tallen en el punt </span>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#7F0000¨»sol«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#7F0000¨»2«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»§#160;«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#7F0000¨»per«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»§#160;«/mo»«mi mathvariant=¨bold-italic¨ mathcolor=¨#7F0000¨»k«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#7F0000¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#7F0000¨»sol«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#7F0000¨»1«/mn»«/mstyle»«/math»</strong></span></p> <p><span style="color: #800000;"><strong>#G1</strong></span></p>
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Yes, case must match
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Answer 1
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Answer 2
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None
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<p style="text-align: justify;"><span style="color: #0000ff;"><strong>Escriu les equacions paramètriques de r:</strong></span><br /><span style="color: #0000ff;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mfenced mathcolor=¨#007F00¨ open=¨{¨ close=¨}¨»«mtable»«mtr»«mtd»«mi mathvariant=¨bold-italic¨»x«/mi»«mo mathvariant=¨bold¨»=«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»e«/mi»«mn mathvariant=¨bold¨»3«/mn»«/mtd»«/mtr»«mtr»«mtd»«mi mathvariant=¨bold-italic¨»y«/mi»«mo mathvariant=¨bold¨»=«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»e«/mi»«mn mathvariant=¨bold¨»4«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«/mstyle»«/math»</span></p> <p style="text-align: justify;"><span style="color: #0000ff;"><strong>Substitueix x i y en l'equació de s, «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#007F00¨»e_«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#007F00¨»2«/mn»«/mstyle»«/math», per trobar el valor de «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mrow»«mi mathvariant=¨bold¨ mathcolor=¨#007F00¨»k«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#007F00¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#007F00¨»k«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#007F00¨»1«/mn»«/mrow»«/mstyle»«/math».</strong></span></p> <p style="text-align: justify;"><span style="color: #0000ff;"> <strong style="font-size: 13.6000003814697px; line-height: 1.4;">Amb aquest valor de k, substituint k en les equacions paramètriques de r, pots trobar les coordenades del punt</strong></span></p> <p style="text-align: justify;"><span style="color: #0000ff;"> </span></p>
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