Math 153 Concept Check 19 Problem 1) Draw a contour map for the plane 2 = x y, including level curves for z = 2,z = 1,2 = 0,2 = 1, and z = 2 (if possible). Problem 1) Draw a contour map for the cone z = vx2 + y2, including level curves for z = -2, Z = -1, z = 0, z = 1, and z = 2 (if possible)