Answer:
B
Step-by-step explanation:
To be a function every input must have exactly one output. There are two input values with 2, therefore this makes it not a function.
hope this helps you
x=-7/4
4x+7=0
4x=-7+0
4x=-7
x= water bottles y=cost
Being that there isn't a graph, generally the top is x and the bottom is y
