Exercise 2A 1 Determine whether each relation below is a function or not. If it is not a function, state the reason why. The number of identical marbles and the total mass of the marbles. by The number of sides in a polygon and the sum of the interior angles. c The number of adult movie tickets purchased and the total cost. hy=-2x+6 1 x-3jy=x d [(0, 1). (1, 2). (2,3). (3.4),...) k e [(1.0), (0, 1). (2,0), (0, 2).(3, 0), (0, 3)1 X 2 6 2 9 1 PA