Determine whether each set of ordered pairs is a function or not.
1. (4,0), (4,1), (4,2)
2. (0 ,-2), (1,1), (3,7),(2,4)
3. (-2,2), (-1,1), (0,0), (1,1)
4. (-2,8), (-1,2), (0,0), (1,2), (2,8)
5. (3,3, (0,0), (-3,3)

Please answer this one! I will follow you, just please answer this one I really need this tommorow for submission. Thankyou!​