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

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Question 469056: What is the slope of the line represented by the equation x = -9?
Answer by algebrahouse.com(1079) About Me  (Show Source):
You can put this solution on YOUR website!
x = -9

slope is "undefined".....it is a vertical line

Whenever you have an equation that starts off "x = ", and then
just a number on the other side, that is a vertical line.
All vertical lines have slopes which are undefined.
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