document.write( "Question 153318: I need the steps for this please\r
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Algebra.Com's Answer #112854 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Let's look at the formula for the slope of the line,
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\n" ); document.write( "For the slope to be undefined the denominator must equal 0.
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\n" ); document.write( "Given the point, (9,-7), then the
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\n" ); document.write( "\"x=9\"
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