Given the relation represented by the set of ordered pairs below, determine and whether it is one$-$to$-$one.

$\{(1,0),(9,2),(-3,11),(2,-4),(-5,7)\}$

Select the correct answer below:

The relation is a function, but it is not one$-$to$-$one.

The relation is a function and is one$-$to$-$one.

The relation is not a function.