SOLUTION: what is the slope of a vertical line? ex. y=-4

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Question 231576: what is the slope of a vertical line? ex. y=-4
Found 2 solutions by rfer, Alan3354:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
it is undefined

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The slope of a vertical line is infinity, or undefined.
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y = -4 is a horizontal line, slope = 0.