document.write( "Question 537507: Is y = (-1/3)x - 5 y = 3x - 13 parallel, perpendicular or neither? \n" ); document.write( "
Algebra.Com's Answer #352889 by mananth(16946)\"\" \"About 
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y = (-1/3)x - 5
\n" ); document.write( "slope m1 = (-1/3)\r
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\n" ); document.write( "\n" ); document.write( " y = 3x - 13
\n" ); document.write( "slope m2=3
\n" ); document.write( "(-1/3)*3= -1\r
\n" ); document.write( "\n" ); document.write( "m1*m2=-1
\n" ); document.write( "So the lines are perpendicular
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