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39 votes
39 votes
Which describes the slope of a vertical line? O zero e positive O undefined e negative

User Aage Torleif
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1 Answer

22 votes
22 votes

When the slope of a line is very high, the line approaches to be a vertical line.

So when we have a line that approaches a vertical line, its slope approaches infinity.

Therefore the slope of a vertical line is undefined.

(Opposite to that, the slope of a horizontal line is zero)

User Carlos Bribiescas
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