Question

What word best describes the slope of the line passing through points (5,12) and (5,-13

Answer 1

The formulat for finding the slop is

m = (y2 - y1)/(x2 -x1)

so if we put the values of our two given points

m = (-13 -12) / (5 - 5) = -25/0 = undefined

so our slop is undefined which means it is a vertical line