document.write( "Question 37228: Where on the graph of 3x-y = 12 are the x and y coordinates opposites of each other?
\n" ); document.write( "I started out by y = mx + b and changed the equation to y = 3x - 12 but i am stuck from there \n" ); document.write( "
Algebra.Com's Answer #22910 by jcmtnez(53)\"\" \"About 
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If you want a point in which the x is opposite to y the point is (x,-x),
\n" ); document.write( "To find such point we have to solve the equation for y=-x\r
\n" ); document.write( "\n" ); document.write( "3x-y = 12,
\n" ); document.write( "y=3x-12,
\n" ); document.write( "(-3)=3x-12,
\n" ); document.write( "-3+12=3x,
\n" ); document.write( "then 9=3x,
\n" ); document.write( "finally we get x=3
\n" ); document.write( "Therefore the point is (3,-3), In wich the x and the y are opposites. \r
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