document.write( "Question 174730: Give the slope of the line that passes through the points (-9,7) and (-2,-8) \n" ); document.write( "
Algebra.Com's Answer #129784 by nerdybill(7384)\"\" \"About 
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For any two points (on a straight line)
\n" ); document.write( "(x1,y1) and (x2,y2)
\n" ); document.write( "the slope is
\n" ); document.write( "m = (y2-y1)/(x2-x1)
\n" ); document.write( ".
\n" ); document.write( "In your problem, the two points were:
\n" ); document.write( "(-9,7) and (-2,-8)
\n" ); document.write( "Substituting into:
\n" ); document.write( "m = (y2-y1)/(x2-x1)
\n" ); document.write( "m = (-8-7)/(-2-(-9))
\n" ); document.write( "m = (-15)/(-2+9)
\n" ); document.write( "m = (-15)/(7)
\n" ); document.write( "m = -15/7\r
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