4) Given the graph of f '(x) and f (x) = I: f '(t)dt, answer the following questions. a) What is the value of f(2)? [1 pt] b) Is 1" (3) positive or negative? Explain how you know without actually computing f(3)- [1 pt] c) Is f (1) positive or negative? Explain how you know without actually computing f (1)- [1 pt] (1) Sketch an accurate graph of f (x). Label at least 3 points on your graph. (If you are printing out this quiz, you can sketch directly over the given graph.) [2 pts]