Question

Which set of ordered pairs is not a function? A. (4, –2), (–2, 2), (2, –2), (4, 2) B. (–4, 2), (–2, 2), (2, 2), (4, 2) C. (–4, 2), (–2, –2), (2, 2), (4, 2) D. (–4, –2), (–2, –2), (2, 2), (4, 2)

Answer 1

A. (4, –2), (–2, 2), (2, –2), (4, 2) is right

Explanation:

Answer 2

A. (4, –2), (–2, 2), (2, –2), (4, 2)

Explanation:

If the same input value shows up more than once, the relation is not a function. In the above answer choice, 4 shows up twice as an input value.

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All the other answer choices have inputs of -4, -2, 2, 4, with no repeats.