which statements is true

Use the graph below to answer the following question. -3 -2 y = f (x) -2 3 -2 .Given the graph of y = f(x) above, select the true statements. The graph of y = f'(x) i : increases on the domain (- co, 1) and decreases on the domain (1, co) ii. is a quadratic function iii. must have an X-intercept at