(a) Use the cross product to nd a vector which is parallel to the intersection line 2 of the planes m+y+z: 1 and 23+y3222. (b) Write parametric equations of the line that passes through the point (3, 1, 5) and is parallel to the line I. (c) Find an equation of the plane that contains the point [3, 1, 5) the line 1