How do you find the slope for x=8?

1 Answer
Alan P.
Apr 7, 2016

The slope of x=8x=8 is "undefined"

Explanation:

x=8x=8 is the equation of a vertical line.

Slope is defined as ("change in " y)/("corresponding change in "x)change in ycorresponding change in x

But the value of xx doesn't change i.e., the change in xx is always 00;
so the definition of slope would require division by 00 (which is not defined).

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