Consider the region R bounded by the lines y = -3r and y = 3c and the parabola y = 4-r?. (b) Using this E and Green's theorem (Theorem 19.1.1), write the area integral 1 dA as R a line integral. Hint: Any function y = f(x) can be parametristd by z(t) = (t, f(t) ). This can be used to parametrice both the line and the parabolal. (4)