Question 3 Find the direction vector of the line which is the intersection of the planes m + y + z = 1 and a: + y z = 2. Hint: The direction vector of the line is orthogonal to both of the planes' normal vectors. 0 (2,2,2) 0 (0, 2, 2) 0 (2,2,0) 0 (2,2,0) 0 (2,2, 2) 0 (0,2.4) 0 (2,2.0) 0 (07 2' 2)