#### Answer

The given relation defines a function.
domain: $\left\{2010, 2011, 2012, 2013\right\}$
range: $\left\{63.0, 63.5, 64.9, 65.1\right\}$

#### Work Step by Step

RECALL:
A function is a relation whose every first coordinate is paired with only one second coordinate.
In the given relation, every first coordinate $(x)$ is paired with only one second coordinate $(y)$.
Thus, the given relation defines a function.
The domain is the set of values of $x$ so the domain is:
$\left\{2010, 2011, 2012, 2013\right\}$
The range is the set of values of $y$ so the range is:
$\left\{63.0, 63.5, 64.9, 65.1\right\}$