The function f graphed below is defined by a polynomial expression of degree 4. Use the graph to solve the exercises.
1. To find a function value from the graph of f, we find the height of the graph above the x-axis at x = _____. From the graph of f we see that f(3) = ____ and f(1) = _____. the net change in f between x= 1 and x = 3 is f(__) - f(__) = ______
