I WILL MARK BRAINLIEST TO CORRECT ANSWER.

Answer:
2
Step-by-step explanation:
The average rate of change is the slope of the line connecting the two points of interest. Here, that line has a rise of 2 units for each run of 1 unit, so its slope is ...
rise/run = 2/1 = 2
The average rate of change of g on [-4, 2] is 2.