document.write( "Question 655332: which ordered pair is a solution to hte system 3x+2y=-9 and 5x-3y=4 \n" ); document.write( "
Algebra.Com's Answer #409062 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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Solved by pluggable solver: Solve the System of Equations by Graphing

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\n" ); document.write( " Start with the given system of equations:
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\n" ); document.write( " \"3x%2B2y=-9\"
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\n" ); document.write( " \"5x-3y=4\"
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\n" ); document.write( " In order to graph these equations, we need to solve for y for each equation.
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\n" ); document.write( " So let's solve for y on the first equation
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\n" ); document.write( " \"3x%2B2y=-9\" Start with the given equation
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\n" ); document.write( " \"2y=-9-3x\" Subtract \"3+x\" from both sides
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\n" ); document.write( " \"2y=-3x-9\" Rearrange the equation
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\n" ); document.write( " \"y=%28-3x-9%29%2F%282%29\" Divide both sides by \"2\"
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\n" ); document.write( " \"y=%28-3%2F2%29x%2B%28-9%29%2F%282%29\" Break up the fraction
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\n" ); document.write( " \"y=%28-3%2F2%29x-9%2F2\" Reduce
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\n" ); document.write( " Now lets graph \"y=%28-3%2F2%29x-9%2F2\" (note: if you need help with graphing, check out this solver)
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\n" ); document.write( " \"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-3%2F2%29x-9%2F2%29+\" Graph of \"y=%28-3%2F2%29x-9%2F2\"
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\n" ); document.write( " So let's solve for y on the second equation
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\n" ); document.write( " \"5x-3y=4\" Start with the given equation
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\n" ); document.write( " \"-3y=4-5x\" Subtract \"5+x\" from both sides
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\n" ); document.write( " \"-3y=-5x%2B4\" Rearrange the equation
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\n" ); document.write( " \"y=%28-5x%2B4%29%2F%28-3%29\" Divide both sides by \"-3\"
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\n" ); document.write( " \"y=%28-5%2F-3%29x%2B%284%29%2F%28-3%29\" Break up the fraction
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\n" ); document.write( " \"y=%285%2F3%29x-4%2F3\" Reduce
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\n" ); document.write( " Now lets add the graph of \"y=%285%2F3%29x-4%2F3\" to our first plot to get:
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\n" ); document.write( " Graph of \"y=%28-3%2F2%29x-9%2F2\"(red) and \"y=%285%2F3%29x-4%2F3\"(green)
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\n" ); document.write( " From the graph, we can see that the two lines intersect at the point (\"-1\",\"-3\") (note: you might have to adjust the window to see the intersection)
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