Question

Determine the slope of the line that contains the points (5,4) and (5,8)

a. slope = 4
b. slope = -4
c. slope = 0
d. slope is undefined

Answer 1

The slope is undefined because of the formula y2-y1/ x2-x1

in this case in (5,4) the 5 is x1 and the 4 is y1. in (5,8) the five is x2 and the 8 is y2. Pug the number in for the formula and you will see that it is D. undefined.