document.write( "Question 95787: Are lines L1 through (-2,1) and (0,3) and L2 through points (3,2) and (5,0) perpendicular? \n" ); document.write( "

Algebra.Com's Answer #69816 by elima(1433) $\"\"$ $\"About$

You can put this solution on YOUR website!
L1; m = $\"%28y2-y1%29%2F%28x2-x1%29\"$
\n" ); document.write( " m = $\"%283-1%29%2F%280+-+%28-2%29%29\"$
\n" ); document.write( "m = $\"2%2F2\"$
\n" ); document.write( "L2; m = $\"0-2%29%2F%285-3%29\"$
\n" ); document.write( " m = $\"-2%2F2\"$
\n" ); document.write( "Yes they are perpendicular, lines are perpendicular if there slopes are negative reciprocals.
\n" ); document.write( ":) \n" ); document.write( "

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