ANSWER
No, there are two points with the same x-coordinates.
EXPLANATION
The relation in the graph is not a function.
There are two points in the relation that have the same x-coordinates.
These points are (1,1) and (1,3).
As a result of this , a vertical line will intersect the graph of the relation at these two points.
Since the graph of the relation does not pass the vertical line test, it is not a function.
