-/1 points RogaCalcET3 16.2.001. My Notes Let f(x, y, z) = x + yz and let C be the line segment from P = (0, 0, 0) to (6, 4, 4). Ask Your Teacher (a) Calculate (r(t)) and ds = ||rt|| dt for the parametrization r(t) = (6t, 4t, 4t) for Osts 1. f(r(t))= eBook ds= dt (b) Evaluate f(x, y, z) ds.