Use a Graphing Utility and Cramer's Rule to Solve (If $$\left\{ \begin{array} { r } x + 2 y - z = - 5 \\2 x - 2 y - 2 z = - 4 \\- x + 3 y + 4 z = 6\end{array} \right.$$

question 54

Multiple Choice

Use a graphing utility and Cramer's Rule to solve (if possible) the system of equations.? $$\left\{ \begin{array} { r } x + 2 y - z = - 5 \\2 x - 2 y - 2 z = - 4 \\- x + 3 y + 4 z = 6\end{array} \right.$$ ?

• A)(-1,-1,2)
• B)(-1,-1,-1)
• C)(-1,1,-2)
• D)(-1,-1,-2)
• E)(-1,1,2)

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