document.write( "Question 1025577: what equation passes through (10,10) & is perpendicular to the line described by y=-1/2x-3? \n" ); document.write( "
Algebra.Com's Answer #640844 by mananth(16946)\"\" \"About 
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Equation of a perpendicular line\r
\n" ); document.write( "\n" ); document.write( " y = - 1/ 2 x -3
\n" ); document.write( "Compare this equation with y=mx+b, m= slope & b= y intercept
\n" ); document.write( "slope m = - 1/2
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\n" ); document.write( "The slope of a line perpendicular to the above line will be the negative reciprocal 2
\n" ); document.write( "Because m1*m2 =-1
\n" ); document.write( "The slope of the required line will be 2
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\n" ); document.write( "m= 2 ,point ( 10 , 10 )
\n" ); document.write( "Find b by plugging the values of m & the point in
\n" ); document.write( "y=mx+b
\n" ); document.write( "10 = 20 + b
\n" ); document.write( "b= -10
\n" ); document.write( "m= 2
\n" ); document.write( "The required equation is y = 2 x -10
\n" ); document.write( "m.ananth@hotmail.ca
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