document.write( "Question 443523: Find the slope if it exists of the straight line containing the pair of points
\n" ); document.write( "(4,5)and(9,-9)
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Algebra.Com's Answer #305891 by chriswen(106)\"\" \"About 
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\"slope=%28y1-y2%29%2F%28x1-x2%29\"
\n" ); document.write( "\"slope=%285-%28-9%29%29%2F4-9\"
\n" ); document.write( "\"slope=%2814%29%2F%28-5%29\"
\n" ); document.write( "slope=-2.8\r
\n" ); document.write( "\n" ); document.write( "Therefore the slope of the straight line is -2.8.
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