Answer:
0
Step-by-step explanation:
We can use the formula change in y divided by change in x for this, so for example we can take the points (6, 2) and (3, 2).
The change in y would be 2 - 2 = 0.
The change in x would be 3 - 6 = -3
Chang in y divided by change in x = 0/-3 = 0.
