(1 point) Let C be the curve which is the union of two line segments, the first going from (0, 0) to (-4,-3) and the second going from (-4,-3) to (-8,0). Compute the line integral 4dy + 3dx. 1 Suppose F(x,y) = xyi + yj. (a) Find a vector parametric equation for the parabola y = x from the origin to the point (4, 16) using t as a parameter. r(t) = (b) Find the line integral of F along the parabola y = x from the origin to (4, 16).