Which graph is not a function

Answer:
i'm pretty sure the one you have selected in the photo is right
Step-by-step explanation:
Answer:
The first graph
Step-by-step explanation:
The first graph is not a function because it just has plotted points, not graph to actually represent it
The other two graphs we would be able to determine the function that makes each one
A function cannot be figured out with only the points in the first graph