document.write( "Question 200611: Find the slope of the line passing through the pair of points (1/5,1) and 1/5,4)? My answer was undefined... \n" ); document.write( "
Algebra.Com's Answer #150856 by RAY100(1637)\"\" \"About 
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Your answer was right.
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\n" ); document.write( "a rough sketch show it best. A VERTICAL LINE at x= (1/5),,,,undefined
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\n" ); document.write( "The formula also works, but is not a reassuring,,,m = (y2-y1) / (x2-x1) = 3/0 ,,,undefined
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