Please help! I’ll give brainliest! Which relation is a function?

(1, 2), (2, 3), (3, 4), (4, 5)
(1, 2), (3, 4), (5, 6), (1, 8)
(0, 2), (0, 4), (0, 6), (0, 8)
(1, 2), (2, 1), (1, 3), (3, 1)

Respuesta :

Answer:

(1,2),(2,3),(3,4),(4,5)

Step-by-step explanation:

Inputs (x) can only be with one output (y)

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