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PLZZ HELP I AM IN NEED WILL MARK BRAINLIEST!
Which relation is a function?

A: {(7, 12), (1, -5), (3, -10), (2, -5)}
B: {(1, 2), (1, 5), (1, -1), (1, 4)}
C: {(-3, 4), (-2, 5), (0, 9), (0, 12)}
D: {(8, -1), (2, -1), (3, 8), (2, 5)}

Respuesta :

Answer:

A: {(7, 12), (1, -5), (3, -10), (2, -5)}

Step-by-step explanation:

A relation should not have any repeating x values (or domains) in the group of coordinates.

B has 1 as all it's domains. B is not a function.

C lists 0 twice as it's domain. C is not a function

D lists 2 twice as it's domain. D is not a function

A is the best answer because it does not repeat any domains in the coordinates. A is a function.

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