Exercise 1 Page 271

The first number in each ordered pair is the $x\text{-}$value and the second number is the corresponding $y\text{-}$value.

$\text{Domain: }\{\text{-}2,\text{-}1,0,1\}$
$\text{Range: }\{3,4,5,6\}$
Mapping:

Is the Relation a Function? Yes