The function is,
\ \\
| \
x \ | \
\
y \ | \
\
(x, y) \ | \
| \
0 \ | \
\
2.2 \ \ \ | \
\
(0, 2.2) \ | \
| \
1 \ | \
\
3.2 \ | \
\
(1, 3.2) \ | \
| \
2 \ | \
\
4.2 \ | \
\
(2, 4.2) \ | \
| \
3 \ | \
\
5.2 \ | \
\
(3, 5.2) \ | \
Express the relation as ordered pairs. 
Observe the table and write a rule
\
The function is
.