Question

What is the slope of the line that passes through the points (9, 4) and (9,-5)?

Write your answer in simplest form.

Answer 1

slope=undefined

Explanation:

(-5-4)/(9-9)

-9/0

`((y_2-y_1))/((x_2-x_1))`

`((-5-4))/((9-9))`

`(-9)/(0)`

Because the denominator is 0, the slope is undefined.

Rise over run. The run is 0.