Side note: this is section 4.3~what derivatives tell us about a graph

Consider the following graph. X 2 3 4 5 6 (a) Find the interval(s) on which f is increasing. (Enter your answer using interval notation.) (4,6) X (b) Find the interval(s) on which f is decreasing. (Enter your answer using interval notation.) (1,3 ) X (c) Find the open interval(s) on which f is concave upward. (Enter your answer using interval notation.) (0,3) X (d) Find the interval(s) on which fis concave downward. (Enter your answer using interval notation.) (1,4) X (e) Find the coordinates of the point(s) of inflection. ( x , y ) = (2,3)