Answer:
The slope is 0
Step-by-step explanation:
The slope is the change of y over the change in x. Since y doesn't change at all, it's 0 over 3. 0/3 is just 0, so the slope is 0.
undefined
slope = y2 - y1 / x2 - x1
slope = 5 - 5 / 6 - 3
slope = 0/3
slope = undefined
Undefined because all y coordinates are the same number: 5
