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)![]() ![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |