document.write( "Question 548271: what is the equation of a line perpendicular to y=3x-7 and goes through (-3,-4) \n" ); document.write( "
Algebra.Com's Answer #356915 by mananth(16946)\"\" \"About 
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1 y = 3 x -7
\n" ); document.write( "Divide by 1
\n" ); document.write( " y = 3 x + -7
\n" ); document.write( "Compare this equation with y=mx+b, m= slope & b= y intercept
\n" ); document.write( "slope m = 3
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\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 - 1/3
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\n" ); document.write( "m= - 1/3 ,point ( -3 , -4 )
\n" ); document.write( "Find b by plugging the values of m & the point in
\n" ); document.write( "y=mx+b
\n" ); document.write( "-4=1.00+b
\n" ); document.write( "b=-5
\n" ); document.write( "m= - 1/3
\n" ); document.write( "The required equation is y=- (1/3)x-5
\n" ); document.write( "m.ananth@hotmail.ca
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