document.write( "Question 133045: How do I find the slope? x=4 \n" ); document.write( "
Algebra.Com's Answer #97256 by stanbon(75887)\"\" \"About 
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How do I find the slope? x=4
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\n" ); document.write( "The slope is \"undefined\".
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\n" ); document.write( "Why?
\n" ); document.write( "Take two points (4,5) and (4,10) on the line.
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\n" ); document.write( "slope = (10-5)(4-4) = 5/0 = \"undefined\"
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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