Answer:
B. No, because one x-value corresponds to two different y-values.
Step-by-step explanation:
In the table, we can see that one x-value, 3, has two different outputs for y, 4 and 3. A function should only have one output for every input, thus this is not a function for the reason that one x-value corresponds to two different y-values. It is not D because it doesn't matter if y-values are positive or negative in a function.
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