Tell whether if the given is function or not. Write F if the given is function, and NF if it is not.
1. {(-2,5), (3,8), (4,8), (x, 10), (8, 2)}
6. {(7,5), (0, 3), (4, 6))}
2. {(1,4), (2,5), (2.6), (3, 10), (6,9).
7. {(22.10), (5,10), (,5 8)}
3. {(1,5), (2,4),(4,8). (3. 10), (10,5)}
8. {(-1,8), (1, 5), (1, 1)
4. {(4,4), (5,8), (8, 12), (6, 12), (4, 1)}
5. {(-4,8), (3,7), (5, 11), (9, 13)}
5. {(4,8), (5,10), (1,8), (6, 12), (8,9)}
10.{(-7,-5),(1,-2), (8. 12), (8, 10)}
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