Answer:
We conclude that we conclude that the rate of change of a linear function g from x=-3 to x=-1 is the same as it is from x=-1 to x=1.
Thus, the function is linear.
Explanation:
We know that the rate of change remains constant for a linear function.
- In other words, the rate of change does not change for the entire domain of a linear function.
Comparing with the slope-intercept form
The slope-intercept form of a linear function is

where m is the slope or rate of change
For example, considering the linear function

Then the average rate of change is 6 over any interval selected.
Therefore, we conclude that we conclude that the rate of change of a linear function g from x=-3 to x=-1 is the same as it is from x=-1 to x=1.
Thus, the function is linear.