Homework help needed

The function f graphed below is defined by a polynomial expression of degree 4. Use the graph to solve the exercise. O (a) If f is increasing on an interval, then the y-values of the points on the graph rise was the x-values increase. From the graph of f we see that f is increasing on the intervals (2, 7 ), (5,6) . (Enter your answer using interval notation.) X (b) If f is decreasing on an interval, then the y-values of the points on the graph fall as the x-values increase. From the graph of f shown above, we see that fis decreasing on the intervals (4,2), (7,0 ) . (Enter your answer using interval notation.) X