Which of the following is an example of a function?

O { (3, 4), (4, 8), (6, 6), (7, 10) }

O { (0, 2), (1, - 4), (1, - 3), (3, 6) }

O {-1, 4), (0, 3), (0, - 2) }

{ (5, 7), (6,8), (6,9), (7, 10) }

First one because it is function

{ (3, 4), (4, 8), (6, 6), (7, 10) }

Step-by-step explanation:

Only the first one is a function because the others have repeated x values in some of the ordered pairs.

For example, {-1, 4), (0, 3), (0, - 2) } has a repeated x = 0.