Parameterize the plane that contains the three points (5, -4,4), (-10, 12, -12), and (15, 30, 35). r(s, t) = <3.3015s, 4+2.12697-3.3015s, -2.1269t> (Use s and t for the parameters in your parameterization, and enter your vector as a single vector, with angle brackets: e. g., as < 1 +8+ t, s-t, 3-t>.)