document.write( "Question 918979: Please find the slope of a line perpendicular to the line 5x-7y=39. Thanks for your help. \n" ); document.write( "
Algebra.Com's Answer #557345 by ewatrrr(24785)\"\" \"About 
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the standard slope-intercept form for an equation of a line is
\n" ); document.write( "\"y+=+highlight_green%28m%29x+%2B+highlight%28b%29\" where m is the slope and b the y-intercept.
\n" ); document.write( "5x-7y=39 Solving for y
\n" ); document.write( "y = \"+highlight_green%285%2F7%29\"x - 39/7, m = (5/7)\r
\n" ); document.write( "\n" ); document.write( "the slope of a line perpendicular: m = -7/5 (negative reciprocal) \"%285%2F7%29%28-7%2F5%29+=+-1\"
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