document.write( "Question 179902: Match, which line is parallel, perpendicular, or neither to y=5x+2\r
\n" ); document.write( "\n" ); document.write( "y=5x+9
\n" ); document.write( "y=-5y+2
\n" ); document.write( "y=-5x-4
\n" ); document.write( "

Algebra.Com's Answer #134801 by nerdybill(7384)\"\" \"About 
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If
\n" ); document.write( "slopes are equal -- parallel
\n" ); document.write( "slopes are negative reciprocal -- perpendicular
\n" ); document.write( "otherwise -- neither
\n" ); document.write( ".
\n" ); document.write( "Looking at:
\n" ); document.write( "y=5x+2
\n" ); document.write( "This is in the form of: y = mx + b (slope-intercept form)
\n" ); document.write( "where
\n" ); document.write( "m is slope
\n" ); document.write( "b is y-intercept
\n" ); document.write( ".
\n" ); document.write( "So, now we know that the slope of
\n" ); document.write( "y=5x+2
\n" ); document.write( "is 5
\n" ); document.write( ".
\n" ); document.write( "A line with a slope of 5 is parallel.
\n" ); document.write( "A line with a slope of -1/5 will be perpendicular.
\n" ); document.write( ".
\n" ); document.write( "Evaluating against:
\n" ); document.write( "y=5x+9 (same slope, must be parallel)
\n" ); document.write( "y=-5y+2 (neither)
\n" ); document.write( "y=-5x-4 (neither)
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