QUESTION 8 Suppose that for a function 90:) you know that the average rate of change from x = 2 to x =10 is 4. Which of the following statements must be true? ' " Between the values of x=2 and x=10, this function increases by 4 for every one unit x increases. The slope of any secant line on 900 must be 4. " Between x=2 and x=10 the difference between y values (f(10) - f(2)) must be 4. The slope of the secant line between x=2 and x=10 must be 20