document.write( "Question 40613: Find the slope of the line through the pair of points.\r
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\n" ); document.write( "\n" ); document.write( "(-9, -6) and (-9, -8)\r
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Algebra.Com's Answer #26025 by junior403(76)\"\" \"About 
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Find the slope of the line through the pair of points.
\n" ); document.write( "(-9, -6) and (-9, -8)
\n" ); document.write( "When finding the slope of a line (m) passing through 2 points (-9, -6) and (-9, -8) we can use the slope formula.
\n" ); document.write( "\"m=%28y2-y1%29%2F%28x2-x1%29\"
\n" ); document.write( "Lets use point (-9,-6) as (x1,y1) and point(-9,-8) as (x2,y2).
\n" ); document.write( "\"m+=+%28-8-%28-6%29%29%2F%28-9-%28-9%29%29\"
\n" ); document.write( "This means...
\n" ); document.write( "\"m+=+%28-8%2B6%29%2F%28-9%2B9%29\"
\n" ); document.write( "Then perform the indicated operations...
\n" ); document.write( "\"m+=+%28-2%29%2F%280%29\"
\n" ); document.write( "Which is undefined.
\n" ); document.write( "The slope formula gives us a fraction that tells us the value of the slope m.
\n" ); document.write( "\"m=rise%2Frun\"
\n" ); document.write( "The rise tells us how a line moves verticaly on a graph, and the run tells us how a line moves horizontaly on the same graph.
\n" ); document.write( "So if the rise is -2 and the run is 0 then we know that the line does not move horizontaly, or it is a vertical line.
\n" ); document.write( "So the slope is undefined.
\n" ); document.write( "I hope this helps.
\n" ); document.write( "Good Luck!\r
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