Answer:
W.
Step-by-step explanation:
1. A function has all x-coordinates assigned to a unique y-coordinate. Two of the same x-coordinates cannot have different y-coordinates. For example, if a table had the points (3, 2) and (3, -2), the table wouldn't be a function.
2. Given the statement above, we can confirm that table W is the answer because all the other tables have two of the same x-coordinates having different y-coordinates.
