Okay, so the formula for this is y = mx + b.
y is your answer, m is your average rate of change, otherwise known as your slope, and b is your y-intercept.
And the equation is : y = 2x + 2
y is still your answer. 2 is your average rate of change, and 2 is your y-intercept. so that would make your average rate of change 2.
