Final answer:
The given function is a function.
Step-by-step explanation:
The given function is f(x) = {(1,12),(2,0),(3,3),(5,7)}.
To determine if f(x) is a function, we need to check if each input value has a unique output value. In this case, each x-value is paired with only one y-value, so f(x) is indeed a function. Therefore, the answer is true.