11. Suppose that a function / has no x-intercepts. Which of the following MUST be true? a. The equation ((x) = 0 has no real-number solution. b. The graph of f has no points whose x-coordinate is 0. c. The graph of f is a horizontal line. d. f is an invertible function. 12. The graph of f(x) is shown at the left and the graph of y = g(x) is shown at the right. (No equations are given.) What is the relationship between g(x) and f(x)? f(x ) g(x) a. g(x) = f(x) + 5 b. g(x) = f(x + 5) c. g(x) = f(x - 5) -10 d. g(x) = 5f(x) -10