document.write( "Question 761518: Find the slope of the line that passes through the points (4, –1) and (4, 3) \n" ); document.write( "
Algebra.Com's Answer #463274 by stanbon(75887)\"\" \"About 
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Find the slope of the line that passes through the points (4, –1) and (4, 3)
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\n" ); document.write( "Since the x-values are the same the line is vertical.
\n" ); document.write( "The slope is undefined.
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\n" ); document.write( "m = (3--1)/(4-4) = 4/0 is undefined
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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