\ \
First draw a table with two columns and list the x-coordinates in the first column and y-coordinates in the second column.
\
| \
x \ | \
\
y \ | \
| \
2 \ | \
\
1 \ | \
| \
2 \ | \
\
4 \ | \
| \
5 \ | \
\
1 \ | \
\ \
Draw a coordinate plane and plot the pairs (2, 1), (2, 4) and (5, 1). \ \
.gif\")
\ \
Graph:
.gif\")