document.write( "Question 208429: Parallel and Perpendicular Slope\r
\n" ); document.write( "\n" ); document.write( "Please help me solve this equation: Which lines are parallel?
\n" ); document.write( "a.x=7
\n" ); document.write( "b.y=5/6x+8
\n" ); document.write( "c.y=5/6x-4
\n" ); document.write( "d.x=9
\n" ); document.write( "

Algebra.Com's Answer #157661 by nerdybill(7384)\"\" \"About 
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Which lines are parallel?
\n" ); document.write( "a.x=7
\n" ); document.write( "b.y=5/6x+8
\n" ); document.write( "c.y=5/6x-4
\n" ); document.write( "d.x=9
\n" ); document.write( ".
\n" ); document.write( "'a' and 'd' are parallel
\n" ); document.write( "(both are vertical lines)
\n" ); document.write( "AND
\n" ); document.write( "'b' and 'c' are parallel
\n" ); document.write( "(by inspection, because of slope-intercept form y=mx+b -- both have the same slope of 5/6)
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