What is the slope of the line represented by the equation x = -9?

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What is the slope of the line represented by the equation x = -9?

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Answer 1 · 2016-10-05T12:07:55

The slope of #x=-9# is "undefined"

Explanation:

Slope is by definition #("change in "y)/("change in " x)#
but for #x=-9# the value of #x# does not change,
so #"change in " x = 0#
and division by zero is "undefined"

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What is the slope of the line represented by the equation x = -9?

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