document.write( "Question 554813: what is the slope for (-12, 9) (-12, -6) \n" ); document.write( "
Algebra.Com's Answer #361491 by nyc_function(2741)\"\" \"About 
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m = (-6-9)/(-12-(-12)\r
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\n" ); document.write( "\n" ); document.write( "m = -15/0\r
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\n" ); document.write( "\n" ); document.write( "Let m = slope\r
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\n" ); document.write( "\n" ); document.write( "Since we cannot divide by zero, then the answer is UNDEFINED SLOPE. \r
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\n" ); document.write( "\n" ); document.write( "This means, the slope DOES NOT EXIST for the given two points.\r
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\n" ); document.write( "\n" ); document.write( "The line that connects the two given points is surely a vertical line for the slope of vertical lines does not exist. The line that connects these two points is the line x = -12, which is a vertical line. \r
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