Answer:
0
Step-by-step explanation:
Notice that the y-coordinates of the points are the same. That means that in going from one point to the other, we don't move in the vertical direction at all. From (3, -4) to (2, -4) is a horizxontal change of 1 unit.
Slope = m = rise / run
and in this case m = 0/1 = 0.
The rate of change is the slope and is 0.
