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Which set of ordered pairs represents a function?
A) {(-4,9), (-1,0), (0,9), (4,8), (5,5)}
B) {(-4,9).(-1,0), (0,9).(-4,8), (0,5)}
C){(-4,9), (-4.0). (5.9), (4,8), (5,5)}
D) {(-4,9),(-1,0), (0,9),(-1,8), (5,5)}

Respuesta :

A, the x values don’t repeat
The answer is a.
EXPLANATION: you know it’s a function if the x doesn’t repeat, it’s ok if the y repeats tho

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