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Which of the sets of ordered pairs represents a function?

A = {(2, −2), (5, −5), (−2, 2), (−5, 5)}
B = {(4, 2), (4, −2), (9, 3), (9, −3)}

Respuesta :

For something to be a function, the input (x value) can ONLY HAVE ONE output (y value), so if x has multiple outputs, it is not a function

B is not a function because x = 2 and x = 9 has 2 outputs

Your answer is A

altavistard

Answer:

Step-by-step explanation:

A represents a function.  Why?  Because all the x-values are unique (no duplications).

B does not represent a function.  Why?  Because the input 4 is repeated and has different y-values for this one input, and similarly the input 9 is repeated.

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