Use Matrices to Solve the System of Equations $\left\{ \begin{array} { l } 3 x + y = 11 \\x + 3 y = - 7\end{array} \right.$

Multiple Choice

Use matrices to solve the system of equations. $\left\{ \begin{array} { l } 3 x + y = 11 \\x + 3 y = - 7\end{array} \right.$

A) (5,-4)
B) (6,-30
C) (-5,4)
D) no solution
E) infinitely many solutions