document.write( "Question 189387: solve the systems y=-x and y=4x-8 \n" ); document.write( "
Algebra.Com's Answer #142080 by Mathtut(3670)\"\" \"About 
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solve the systems y=-x and y=4x-8
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\n" ); document.write( "take y's value in 1st eq and plug it into 2nd eq
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\n" ); document.write( "-x=4x-8
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\n" ); document.write( "5x=8
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\n" ); document.write( "x=8/5
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\n" ); document.write( "now plug this back into either eq. I will use y=-x
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\n" ); document.write( "y=-8/5
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\n" ); document.write( "so (8/5,-8/5)
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