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