Solve the System by Using the Inverse of the Coefficient $$\begin{array} { r } 3 x + 5 y = - 10 \\- 3 x - 6 y = 9\end{array}$$

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { r } 3 x + 5 y = - 10 \\- 3 x - 6 y = 9\end{array}$$

A) $\{ ( - 5,1 ) \}$
B) $\{ ( 5 , - 1 ) \}$
C) $\{ ( - 1,5 ) \}$
D) $\{ ( 1 , - 5 ) \}$