The slope of the line that goes through (−3, −5) and (−3, −6) is ______.

A. positive
B.
negative

C. zero
D.
undefined

3 answers

D. undefined.

The slope of a line is calculated as the difference in y-coordinates divided by the difference in x-coordinates between two points on the line. In this case, both points have the same x-coordinate (-3), so the difference in x-coordinates is 0. Dividing by 0 is undefined, so the slope is also undefined.
Finding the Slope of a Line
unit 4 lesson 3

1. positive
2. 2
3. -3
4. 4/3
5. undefined

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