Answer:
Graph 1 I think is yes because when determining if a function, you do the vertical line test meaning you place an imaginary vertically on the graph and if there is 2 points on the line at once, like for graph 5 or 6, then it isn't a function.
Therefore,
Graph 1: Yes
Graph 2: No
Graph 3: Yes
Graph 4: Yes
Graph 5: No
Graph 6: No
For graph 1, it is way to close to tell if a function or not. So, I would say go with your gut.
