The relation is
\
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. \
| \
x \ | \
\
y \ | \
| \
3 \ | \
\
1 \ | \
| \
2 \ | \
\
3 \ | \
| \
2 \ | \
\
5 \ | \
| \
-1 \ | \
\
7 \ | \
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 
The element of 2 has paired with two elements 3 and 5.
\Therefore the relation is not a function.
\No, the relation is not a function.
\