Question

Plot the pair of points and determine the slope of the line containing them. Graph the line.

Answer 1

Part 1

we have the points

(-1,3)

(-1,-1)

Find out the slope

Applying the formula

m=(-1-3)/(-1+1)

m=-4/0 ------> is undefined

that means

is a vertical line

see the attached figure to better understand the problem