ANSWER
Yes,no two ordered pairs on this graph have the same first element
Step-by-step explanation
For a set of ordered pairs to be a function,there must not be any two points that have the same first elements.
This means that, the x-coordinates must not repeat for any two given points.
The graph given represents a function because,no two ordered pairs on this graph have the same first element.
Hence it would pass the vertical line test.
The third choice is correct.