document.write( "Question 521342: Write an equation of the line contaning the given point and perpendicular to the givin line
\n" ); document.write( "(3,-6); 4x+9y=7 \n" ); document.write( "
Algebra.Com's Answer #346441 by mananth(16946)\"\" \"About 
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4 x + 9 y = 7
\n" ); document.write( "Find the slope of this line
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\n" ); document.write( "9 y = -4 x + 7
\n" ); document.write( "Divide by 9
\n" ); document.write( " y = 0 x + 0.78
\n" ); document.write( "Compare this equation with y=mx+b
\n" ); document.write( "slope m = -0.44
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\n" ); document.write( "The slope of a line perpendicular to the above line will be the negative reciprocal 2.25
\n" ); document.write( "m1*m2=-1
\n" ); document.write( "The slope of the required line will be 2.25
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\n" ); document.write( "m= 2 1/4 ,point ( 3 , -6 )
\n" ); document.write( "Find b by plugging the values of m & the point in
\n" ); document.write( "y=mx+b
\n" ); document.write( "-6 = 6.75 + b
\n" ); document.write( "b= -12.75
\n" ); document.write( "m= 9/4
\n" ); document.write( "The required equation isy = 9/ 4 x-51/ 4
\n" ); document.write( "m.ananth@hotmail.ca
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