Use Matrices to Solve the System of Equations (If Possible) $\left\{ \begin{array} { l } 5 x + 4 y = - 9 \\x + 6 y = - 33\end{array} \right.$

question 87

Multiple Choice

Use matrices to solve the system of equations (if possible) . Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. $\left\{ \begin{array} { l } 5 x + 4 y = - 9 \\x + 6 y = - 33\end{array} \right.$

• A)x = -3, y = 6
• B)x = 3, y = -6
• C)x = -6, y = 3
• D)x = -6, y = -3
• E)no solution

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