Algebra.Com's Answer #449576 by Edwin McCravy(20056)![\"\"](\"/images/stars/stars-13.gif\")  
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What is the slope of the line that passes through the points (7, -9) and (-13, -6) a. -3/20 b. 3/20 c.3/4 or d.5/2
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document.write( "There are two ways to do it:\r\n" );
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document.write( "First way:\r\n" );
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document.write( "1. Plot the two points:\r\n" );
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document.write( "2. Draw the line:\r\n" );
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document.write( "Draw a vertical rise (which is really a \"fall\" and a horizontal run from one\r\n" );
document.write( "point to the other, so as to form a right triangle with the line:\r\n" );
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document.write( "Counting blocks for the rise, the rise is 3, but it's -3 because it goes\r\n" );
document.write( "downward from the line. Counting blocks for the run, the run is 20.\r\n" );
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document.write( "So the slope is rise over the run or  .\r\n" );
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document.write( "Second way:\r\n" );
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document.write( "By the slope formula:\r\n" );
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document.write( "m =  \r\n" );
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document.write( "where (x1,y1) = (7,-9)\r\n" );
document.write( "and where (x2,y2) = (-13,-6)\r\n" );
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document.write( "Plug in:\r\n" );
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document.write( "m =  \r\n" );
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document.write( "m =  \r\n" );
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document.write( "m =  \r\n" );
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document.write( "m = \r\n" );
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document.write( "Edwin \n" );
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