Graph the following function. Estimate the intervals on which the function is increasing or decreasing and any relative maxima or minima. f(x)=4x Use the graphing tool to graph the function. Click to enlarge graph Determine on which interval(s) f(x) is increasing. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The function f is increasing on the interval(s) (Type your answer in interval notation. Use a comma to separate answers as needed.) B. There is no interval on which the function f(x) is increasing. Determine on which interval(s) f(x) is decreasing. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The function f is decreasing on the interval(s) (Type your answer in interval notation. Use a comma to separate answers as needed.) OB. There is no interval on which the function f(x) is decreasing. Determine the relative maxima or minima. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The function has a relative minimum and the minimum value is OB. The function has no relative minimum. at x=