Answer: C. -2
Explanation:
The average rate of change from x = 0 to x = 3 is exactly the same as the slope of the line through the two points (0,6) and (3,0)
m = slope
m = (y2 - y1)/(x2 - x1)
m = (0-6)/(3-0)
m = -6/3
m = -2
The average rate of change is -2. The negative result indicates the slope is going downhill as you move from left to right.
