Question

What is the slope of the line that passes through the points (-1, 1) and

(-1,4)? Write your answer in simplest form.

Answer 1

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Explanation:

You want the slope of the line through points (-1, 1) and (-1, 4).

Slope

The two points lie on the vertical line x = -1. A vertical line has undefined slope.

The slope of the line is undefined.

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Additional comment

The slope is the ratio of rise to run. For a vertical line, the "run" is zero for any chosen "rise." Division by zero gives an undefined result.