document.write( "Question 317709: In each case determine whether the lines are parallel, perpendicular, or neither\r
\n" ); document.write( "\n" ); document.write( "y = x + 7
\n" ); document.write( "y = -x + 2
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Algebra.Com's Answer #227543 by checkley77(12844)\"\" \"About 
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Y=mX+b where m=slope & b=the Y intercept.
\n" ); document.write( "y = x + 7 This equation (line) has a slope=1.
\n" ); document.write( "y = -x + 2 This equation (line) has a slope=-1.
\n" ); document.write( "Therefore these lines are perpendicular.
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