Answer
The given relation defines a function.
domain: $\left\{2011, 2012, 2013, 2014\right\}$
range: $\left\{11,159,999, \space \space 11,210,832, \space \space 11,339,285, \space \space 11,181,735 \right\}$
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:
$\left\{2011, 2012, 2013, 2014\right\}$
The range is the set of values of $y$ so the range is:
$\left\{11,159,999, \space \space 11,210,832, \space \space 11,339,285, \space \space 11,181,735 \right\}$
