Suppose f is a linear function and f() varies at a constant rate of change of 1.5 with respect to a. Suppose we know that f (1.6) = 2.8. a. Suppose x varies from a = 1.6 to x = 1.8... i. How much did a change by? Ac = Preview ii. What is the corresponding change in f(x)? Af(a ) = Preview iii. What is the value f(1.8)? f(1.8) = Preview b. Write a function formula for f(x). (Hint: use the same thinking as in (a), but now imagine a varying from x = 1.6 to any new value of x.) f(z) = Preview Submit