document.write( "Question 281765: The line passing through (-2,y) and (1,0) is perpendicular to line joining (3,3) and (-1,1). Find y. \r
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Algebra.Com's Answer #204692 by subudear(62)\"\" \"About 
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Let the slope of first line be m1 and slope of second line be m2 then
\n" ); document.write( "for both lines to be perpendicular to each other m1*m2 = -1\r
\n" ); document.write( "\n" ); document.write( "lets find m1 and m2\r
\n" ); document.write( "\n" ); document.write( "m1 = (0 - y) / [1 - (-2)] = -(y)/3
\n" ); document.write( "m2 = (1 - 3) / (-1 - 3) = 2/4 = 1/2\r
\n" ); document.write( "\n" ); document.write( "m1*m2 = -1
\n" ); document.write( "-(y)/3 * 1/2 = -1
\n" ); document.write( "-(y)/6 = -1\r
\n" ); document.write( "\n" ); document.write( "y = 6
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