Answer
$\text{Domain: }
[1,5]
\\\text{Range: }
[1,3]
\\\text{Not a function}
$
Work Step by Step
There is a vertical line that will intersect the given graph in more than 1 point.
The $x-$values of the given graph are all the numbers from $1$ to $5$. The $y-$values are all the numbers from $1$ to $3$.
Hence, the given graph has the following characteristics:
\begin{array}{l}\require{cancel}
\text{Domain: }
[1,5]
\\\text{Range: }
[1,3]
\\\text{Not a function}
.\end{array}