Answer:
Graph B is a function
Step-by-step explanation:
We can use the vertical line test to determine if a relation is a function. If a vertical line passes through more than one point, the relation is not a function.
Graph A At x=-1 a vertical line will pass through 3 points, so it is not a function.
Graph B A vertical line does not pass through more than 1 point
Graph C At x=2, it will pass through 2 points so it is not a function
