7 Week 8
3. Which of the following represents a function?
O (5, 1), (5,2), (5, 3), (5, 4)
O (-1, 2), (-2, 1), (-1, -2), (-2, -1)
O (2, 3), (4,3), (-2, -3), (-4, -3)
O (3, 4), (-3, 2), (3, 8), (5,5)