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Answer:
(3, 4)
Step-by-step explanation:
The ordered pairs comprise a function because no x-value is repeated. If you want the list to be not-a-function, then one of the x-values must be repeated.
The x-values given in the original function list are -2, 3, 7, 9. The only one of these that is an x-value in an answer choice is 3, in the pair (3, 4).
Adding (3, 4) will make the relation not a function.
