1 8 1 0 1 0 Graph of y f t The blue line in the graph above defines a linear function y f t A Suppose that 4 is a point that may vary on the t axis Find the accumulated area function A x f t dt that calculates the net area of the shaded region on the interval 0 2 Hint What is the area of a triangle A x B Find the antiderivative for the function f t that has constant term zero Antiderivative F t t 9