Use the graph to determine a. open intervals on which the function is increasing, if any. b. open intervals on which the function is decreasing, if any. c. open intervals on which the function is constant, if any. -5 -4 -3 -2 -1 1 2 3 4 5 -5 -4 -3 -2 -1 1 2 3 4 5 x y A coordinate system has a horizontal x-axis labeled from negative 5 to 5 in increments of 1 and a vertical y-axis labeled from negative 5 to 5 in increments 1. A parabola that opens downward has vertex (negative 2, 1) and passes through the approximate points (negative 3, 0) and (negative 1, 0). Question content area bottom Part 1 a. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The function is increasing on the interval(s) enter your response here. (Type your answer in interval notation. Use a comma to separate answers as needed.) B. There is no interval on which the function is increasing. Part 2 b. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The function is decreasing on the interval(s) enter your response here. (Type your answer in interval notation. Use a comma to separate answers as needed.) B. There is no interval on which the function is decreasing. Part 3 c. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The function is constant on the interval(s) enter your response here. (Type your answer in interval nota