Answer:
The correct answer would be B
Step-by-step explanation:
A function is a relation where each x value has one output.
If an x value has more than 1 corresponding y value then the relation is not a function
For Graph A the x value -1 has multiple corresponding y values therefore A cannot be the answer
For Graph B each x value has one corresponding y value, so this might be the answer, however we should look at the other answer choices just in case.
For Graph C the x values -2 and 2 have multiple corresponding y values therefore C is not the answer
For Graph D the x value 0 has more than 1 corresponding y value therefore D cannot be the answer
So we can conclude that B is the answer.
