Answer
NOT a one-to-one function
Work Step by Step
To know if the given function represents a one-to-one function, perform the Horizontal Line Test.
If each horizontal line will pass through exactly one point only on the graph, then the function is one-to-one.
Note that one horizontal line will pass through infinitely many points on the graph (the same line as the horizontal line shown in the graph).
This means that the given function is a NOT a one-to-one function.
