9514 1404 393
Answer:
8, 12
Explanation:
The x-values of a function cannot repeat. That is, the x-values already in the table, {3, 6, 7, 9}, cannot be used again. Any added x-values must be different from these if your relation is to remain a function.
Of the choices offered, only 8 and 12 can be used for added x-values.