Question 4 (8 points) a) Which two of the following lines are the same? Explain. 1) 2 6 3 2 242 3 =y-3-2 -1 y-2 z-3 2 b) Choose the option which describes the relationship between L, and L2 given below. Explain. L1: (x, y, z) = (1, 7. 2) + +(-1, -1, 1) L2: (x, y. z) = (-3, 0, 1) + 5(2, -2, -2) i) The lines are parallel and distinct. ii) The lines are coincident ifi) The lines are skew [8 marks, Exp C4]