document.write( "Question 523249: Find the slope of the line perpendicular to the line joining point1(8,1) and point 2(2,4)? \n" ); document.write( "
Algebra.Com's Answer #347252 by mananth(16946)\"\" \"About 
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x1 y1 x2 y2
\n" ); document.write( "8 * 1 2 4
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\n" ); document.write( "slope m = (y2-y1)/(x2-x1)
\n" ); document.write( "( 4 - 1 )/( 2 - 8 )
\n" ); document.write( "( 3 / -6 )
\n" ); document.write( "m= - 1/ 2 \r
\n" ); document.write( "\n" ); document.write( "The slope of a line perpendicular to the above line will be the negative reciprocal
\n" ); document.write( "m1*m2=-1
\n" ); document.write( "The slope of the required line will be 2
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