document.write( "Question 145828: Solve the systems of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent\r
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\n" ); document.write( "\n" ); document.write( "3u+v=16
\n" ); document.write( "3u=v+26
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Algebra.Com's Answer #106419 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
note: I'm replacing \"u\" with \"x\" and \"v\" with \"y\" so I can graph the equations.\r
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\n" ); document.write( "\n" ); document.write( "Start with the given system of equations:\r
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\n" ); document.write( "\n" ); document.write( "\"3x%2By=16\"\r
\n" ); document.write( "\n" ); document.write( "\"3x=y%2B26\"\r
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\n" ); document.write( "\n" ); document.write( "In order to graph these equations, we need to solve for y for each equation.\r
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\n" ); document.write( "\n" ); document.write( "So let's solve for y on the first equation\r
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\n" ); document.write( "\n" ); document.write( "\"3x%2By=16\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"y=16-3x\" Subtract \"3+x\" from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"y=-3x%2B16\" Rearrange the equation\r
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\n" ); document.write( "\n" ); document.write( "Now lets graph \"y=-3x%2B16\" (note: if you need help with graphing, check out this solver)\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-3x%2B16%29+\" Graph of \"y=-3x%2B16\"\r
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\n" ); document.write( "\n" ); document.write( "So let's solve for y on the second equation\r
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\n" ); document.write( "\n" ); document.write( "\"3x=y%2B26\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"3x-26=y\" Subtract \"26\" from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"y=3x-26\" Rearrange the equation\r
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\n" ); document.write( "\n" ); document.write( "Now lets add the graph of \"y=3x-26\" to our first plot to get:\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-3x%2B16%2C3x-26%29+\" Graph of \"y=-3x%2B16\"(red) and \"y=3x-26\"(green)\r
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\n" ); document.write( "\n" ); document.write( "From the graph, we can see that the two lines intersect at the point (7,-5) \r
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\n" ); document.write( "\n" ); document.write( "So this means that the system is consistent and independent.
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