1. (-/0.33 Points] DETAILS SCALCET9 4.3.001. Consider the following graph. 4 3 2 1 x 1 2 3 4 5 6 (a) Find the interval(s) on which fis increasing. (Enter your answer using interval notation.) (b) Find the interval(s) on which fis decreasing. (Enter your answer using interval notation.) (c) Find the open interval(s) on which is concave upward. (Enter your answer using Interval notation.) (d) Find the interval(s) on which fis concave downward. (Enter your answer using interval notation.) (e) Find the coordinates of the point(s) of inflection. (x, y) =