The relation is,
\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
\
x \ | \
y \ |
\
| \
0 \ |
\
| \
1 \ |
\
| \
3 \ |
\
| \
5 \ |
Express the relation as ordered pairs.
Draw a table with two columns and list the x-coordinates in the first column
\ and y-coordinates in the second column.
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 first (y-coordinates) coordinates.
\The range of the relation is
The element of has paired with two elements 3, 5.
Therefore the relation is not a function.
\The relation is not a function.