Answer:
Option C is NOT a function.
Step-by-step explanation:
For these functions we will use subtraction as our example. With option A the pattern is: -8, -7, -6, -5. Therefore option A is a function. With option C the pattern is: 3, 3, 3, 2. Therefore this is not a function. With option B the pattern is 0, 0, 0, 0. Therefore this is a function. With option D the pattern is: -6, -2, 2, 6. Therefore this is a function.
This question can be done multiple ways, but this is just one of them.
