Question

Using the given points, determine the slope.

(8, 1) and (8, -4)

slope = -5
slope = 0
slope is undefined

Answer 1

Slope is undefined .

Explanation:

• (8, 1)
• (8, -4)

y2 - y1

m = ---------------

x2 - x1

-4 - 1 -5

m = --------------- = ----- - = 0

8 - 8 0

Answer 2

slope is undefined

Explanation:

We can use the slope formula

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

= (-4 -1)/(8-8)

= -5/0

We cannot divide by zero so the slope is undefined