Solve the System by the Substitution Method $$\begin{array} { l } y = x + 3 \\y ^ { 2 } = 12 x\end{array}$$

Multiple Choice

Solve the system by the substitution method.
- $$\begin{array} { l } y = x + 3 \\y ^ { 2 } = 12 x\end{array}$$

A) $\{ ( 3,6 ) \}$
B) $\{ ( 3,6 ) , ( - 3,0 ) \}$
C) $\{ ( 3,6 ) , ( 3 , - 6 ) \}$
D) $\{ ( 3,6 ) , ( 3 , - 6 ) , ( - 3,0 ) \}$