Given the graph of the function f, answer the questions appearing below. 10 At which point(s) in the interval shown is f'( x) = 0? 6 If there is more than one -value, then separate with commas. For example, & = 2, 3. If no such point exists, then enter DNE. 12 4 6 TO On which interval(s) is f increasing? On which interval(s) is f decreasing? 0 -10