The Matrix Is the Reduced Echelon Matrix for a System $$\left[ \begin{array} { r r r r | r } 1 & 0 & 0 & 0 & 0 \\0 & 1 & 0 & 0 & - 8 \\0 & 0 & 1 & 0 & 0 \\0 & 0 & 0 & 1 & - 9\end{array} \right]$$

question 103

Multiple Choice

The matrix is the reduced echelon matrix for a system with variables x 1 , x 2 , x 3 , and x 4 . Find the solution set of the system. $$\left[ \begin{array} { r r r r | r } 1 & 0 & 0 & 0 & 0 \\0 & 1 & 0 & 0 & - 8 \\0 & 0 & 1 & 0 & 0 \\0 & 0 & 0 & 1 & - 9\end{array} \right]$$

• A) ( \(-\) 3, \(-\) 10, 2, \(-\) 12)
• B) (0, \(-\) 10, 0, \(-\) 12)
• C) (3, \(-\) 8, \(-\) 2, \(-\) 9)
• D) (0, \(-\) 8, 0, \(-\) 9)
• E) inconsistent

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