document.write( "Question 1003848: Determine which two equations represent perpendicular lines.\r
\n" ); document.write( "\n" ); document.write( "(a) y = 3/10x – 5
\n" ); document.write( "(b) y = 5x – 3/10
\n" ); document.write( "(c) y = -1/5x + 3/10
\n" ); document.write( "(d) y = 1/5x – 3/10
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Algebra.Com's Answer #620461 by Boreal(15235)\"\" \"About 
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Perpendicular lines have slope products equal to -1, or the negative reciprocal.
\n" ); document.write( "That would be b and c
\n" ); document.write( "b slope=5
\n" ); document.write( "c slope=(-1/5)
\n" ); document.write( "That product is (-1)
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