Question 9 (2 points) Which of the following graphs describes the surface defined by 2 = os( Vac2 + 32 ) ? 0.5 -0.5 - 10 cn 10 O1 Final Exam 0.5 0 0.5 O 100 50 50 1006 6 O 0.5 -0.5 5 10 -5 -10 -10 Question 10 (2 points) Saved The function f (ac, y) = 203 3x + y - 3y has a critical point at Qm