dy = ². The graph of f passes through the point dx Let f be a function such that at each point (x, y) on the graph of f, the slope is given by (1, -2) and is concave up on the interval 1 < x < 1.5. Let k be the approximation for f (1.3) found by using the locally linear approximation of f at x = 1. Which of the following statements about k is true? k = -2.65 and is an underestimate for f (1.3). A B (0) C D k = -2.65 and is an overestimate for f (1.3). k = -2.15 and is an underestimate for f (1.3). k = -2.15 and is an overestimate for f (1.3).