The function graphed below is defined by a polynomial expression of degree 4 Use the graph to solve the exercise YA M a If f is increasing on an interval then the y values of the points on the graph rise b Iff is decreasing on an interval then the y values of the points on the graph fall V as the x values increase From the graph of f we see that f is increasing on the intervals as the x values increase From the graph of f shown above we see that fis decreasing on the intervals x Enter your answer using interval notation X Enter your answer using interval notations