1. For each of the following, determine whether it is a point, line, or plane in R3 (3D space). Then sketch the object in R3. a. (6 pts) x - 2, = = 2y + 1 b. (6 pts) 2 - 2y + 1 c. (6 pts) z - 2, y - 0, 2 - 5 2. (3 pts) Compute the distance between the points (3,4,-2) and (2,1,3). 3. (6 pts) Find the center and radius of the sphere defined by 3.x2 + 3y2 + 3:2 = -6y + 182 -5