l 1. Let f(x) be a differentiable function such that f(1) = 0 and f(4) = 6. Find the average rate of change on the interval [1,4]: A. 0 B. 0.5 C. 1 D. 2 E. Notenough information 12. If the line tangent to the graph of the function f(x) at the point (1,7) passes through the point (2,2), then f '( 1) is A. -5 B. l C. 3 D. 7 E. undened 13. Let f(x) = 4x3 5x + 3. Which of the following is an equation of the tangent line to the graph of f(x) at the point where x = -1? A. y=7x3 C. y=7x+11 E. y=5x5 B. y=7x+7 D. y=5x1