document.write( "Question 641105: Find the slope, if it exists of the line containing the pair of points.
\n" ); document.write( "1.(-9,-10) and (-14,-17)\r
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Algebra.Com's Answer #403567 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
I'll do the first one to get you started.\r
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\n" ); document.write( "\n" ); document.write( "Only post one problem at a time please. Thank you.\r
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\n" ); document.write( "\n" ); document.write( "Note: is the first point . So this means that \"x%5B1%5D=-9\" and \"y%5B1%5D=-10\".\r
\n" ); document.write( "\n" ); document.write( "Also, is the second point . So this means that \"x%5B2%5D=-14\" and \"y%5B2%5D=-17\".\r
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\n" ); document.write( "\n" ); document.write( "\"m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\" Start with the slope formula.\r
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\n" ); document.write( "\n" ); document.write( "\"m=%28-17--10%29%2F%28-14--9%29\" Plug in \"y%5B2%5D=-17\", \"y%5B1%5D=-10\", \"x%5B2%5D=-14\", and \"x%5B1%5D=-9\"\r
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\n" ); document.write( "\n" ); document.write( "\"m=%28-7%29%2F%28-14--9%29\" Subtract \"-10\" from \"-17\" to get \"-7\"\r
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\n" ); document.write( "\n" ); document.write( "\"m=%28-7%29%2F%28-5%29\" Subtract \"-9\" from \"-14\" to get \"-5\"\r
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\n" ); document.write( "\n" ); document.write( "\"m=7%2F5\" Reduce\r
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\n" ); document.write( "\n" ); document.write( "So the slope of the line that goes through the points and is \"m=7%2F5\"
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