#### Answer

$\text{
NOT a function
}\\\text{Domain: } \{
1
\}\\\text{Range: }\{
-4,-1,2,5
\}$

#### Work Step by Step

$\bf{\text{Solution Outline:}}$
To determine if the given table of values is a function, check if all the $x$-values are used only once.
The domain is the set of all $x$-values, while the range is the set of all $y$-values.
$\bf{\text{Solution Details:}}$
The $x$-value, $1,$ is used more than once in the given table of values. Hence, the given is NOT a function.
The domain is the set of all $x$-values, while the range is the set of all $y$-values. Hence, the given table of values has the following characteristics:
\begin{array}{l}\require{cancel}
\text{
NOT a function
}\\\text{Domain: } \{
1
\}\\\text{Range: }\{
-4,-1,2,5
\}
.\end{array}