What is the slope and intercept of  x=1?

Feb 9, 2017

Slope is: $\text{change in up or down"/"change in along}$

Change in along $= 0$ thus the slope is 'undefined'

You are 'not allowed' to divide by 0

Explanation:

The line goes through all the points where x=1
(1,-5) (1.-4) (1, 0) (1,9) etc

The line is vertical.