The relation is
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
x \ | \
y \ |
\
0.5 \ | \
-3 \ |
\
2 \ | \
0.8 \ |
\
0.5 \ | \
8 \ |
\
\
\
\
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.