What is the slope of (-7,-7) and (-7,1)

Answer 1

Hi Chris,

The slope of a line can be determined using the coordinates of two of the points that lie on the line.

Slope is (you can select either point as (x₁, y₁) as long as you are consistent):

y₂ - y_{1 =} -7 - (-1) = -6

x₂ - x₁ -7 - (-7) 0

This represents an undefined slope. Vertical lines have an undefined slope and these two points would lie on the same vertical line.