#### Answer

$\text{The relation represents a function.}$
$\text{Domain: \{Elvis, Colleen, Kaleigh, Marissa}\}$
$\text{Range: \{Jan. 8, Mar. 15, Sept. 17} \}$

#### Work Step by Step

This relation is a function because each element in the domain corresponds to exactly one element in the range.
$\text{The domain (set of all first coordinates) of the function is } \{\text{Elvis, Colleen, Kaleigh, Marissa}\}$
$\text{The range (set of all second coordinates) of the function is } \{\text{Jan. 8, Mar. 15, Sept. 17} \}$