Find the line integral with respect to arc length / (7x + 6y)ds, where C is the line segment in the xy-plane with endpoints P = (3, 0) and Q = (0, 8). (a) Find a vector parametric equation T(t) for the line segment C so that points P and Q correspond to t = 0 and t = 1, respectively. " ( t ) (b) Using the parametrization in part (a), the line integral with respect to arc length is (7x + 6y)ds = J dt with limits of integration a = and b (c) Evaluate the line integral with respect to arc length in part (b). (7x + 6y)ds =[