The equation is .

The four  x value are substitute from the equation .

The table is x and y values ordered pairs. \ \

\ x \	\ \	\ y         \ \ \
	\   \	\ \
\   \	\ \	\ \
\   \	\ \	\   \
\   \	\ \	\   \ \ \

The solutions of the four ordered pairs are (1, 2), (0,0), (1, 2), (2, 4).

The four ordered pair solutions are (1, 2), (0,0), (1, 2), (2, 4).