Answer:
the rate of change is y = 4 or 4
Step-by-step explanation:
to find the rate of change you want to see what is getting taken away or add and in (-9, -9) and (-9, -5) the y intercept is going from -9 to -5 meaning it is going down and it goes down 4.
But, since we are in the negatives when we go from -9 to -5 we are adding because -9 + 4 = -5 meaning that our rate of change is positive 4 on the y-intercept
