Using the graph of the function f(x) = 2 - 9, find the interval(s) where f' (x) is positive. O (0, 00) O (-00, -3), (3, 00) O (-3, 3) O (-00, 0) Question 2 1 pts Determine the derivative dy dac of the horizontal line y = 7. O dy = 7 d O dy does not exist da O dy = 0 O dy = 7x Question 3 2 pts 1 Let f(a) = Set up, but do not evaluate, the limit definition V2x of the derivative f' (x). O 1 1 th- f (2) = lim V2x V2x h-+0 h O 1 f' (2) = lim V2x + h V2x h-+0 h O 1 1 f' (2) = lim V2x + h V2x h-+0 h O 1 1 f' (2) = lim V2x + 2h V2x h 0 h