Solve Linear Systems by Substitution
- $$\begin{array} { r } 2 x + 5 y = - 9 \\x = 2 y\end{array}$$

Multiple Choice

Solve Linear Systems by Substitution
- $$\begin{array} { r } 2 x + 5 y = - 9 \\x = 2 y\end{array}$$

A) $\{ ( - 2 , - 1 ) \}$
B) $\{ ( - 1 , - 2 ) \}$
C) $\{ ( - 2,1 ) \}$
D) $\{ ( - 1 , - 1 ) \}$