document.write( "Question 393682: What is the slope of any line perpendicular to the line formed by the equation -7x + 63y = 9? \n" ); document.write( "

Algebra.Com's Answer #279361 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "Using the standard slope-intercept form for an equation of a line y = mx + b
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document.write( "  where m is the slope and b the y-intercept.  
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document.write( "7x + 63y = 9     |solving for y to put into the slope-intercept form to find m
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document.write( " y = -(1/9)x + 1/7   | m = -(1/9)
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document.write( "Lines perpendicular will have a slope m = 9  (the negative reciprocal of -(1/9)) \n" );
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