The table is
\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
\
x \ | \
y \ |
\
2000 \ | \
$4000 \ |
\
2001 \ | \
$4300 \ |
\
2002 \ | \
$4600 \ |
\
2003 \ | \
$4500 \ |
Express the relation as ordered pairs.
The domain of the relation is the set of all first (x-coordinates) coordinates.
\The domain of the relation is
The range of the relation is the set of second (y-coordinates) coordinates.
\The range of the relation is
Each element of the domain is paired with exactly one element of the range.
\Therefore the relation is a function.
\Yes.