Score: 3.57/7 4/7 answered Question 3 Suppose that f(x, y) = x y. The directional derivative of f(z, y) in the directional (2, -1) and at the point (z, y) = (3, 1) is Question Help: Video Message instructor D Post to forum Submit Question MacBook Pro esc - C G Search or type URL 3 $ % A & W # N 5 6 Q W m R T Y tabScore: 3.57/7 4/7 answered .Question 5 Find the maximum rate of change of the function f(x, y) = -at the point (3,4) Question Help: Video Message instructor D Post to forum Submit Question MacBook Pro esc C G Search or type URL % W # 4 5 W C D TScore: 3.57/7 4/7 answered . Question 7 Find the maximum rate of change of f(x, y, z) = tan(4x + 3y + 52) at the point (-6, 5, 0). Question Help: Message instructor D Post to forum Submit Question MacBook Pro esc - C G Search or type URL % W # 2 5 W R T