## Intermediate Algebra (12th Edition)

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