Write a System of Linear Equations Represented by the Augmented $$\left[ \begin{array} { r r r | r } 1 & 0 & 0 & 7 \\0 & 1 & 0 & - 9 \\0 & 0 & 1 & \frac { 1 } { 9 }\end{array} \right]$$

question 36

Multiple Choice

Write a system of linear equations represented by the augmented matrix.
- $$\left[ \begin{array} { r r r | r } 1 & 0 & 0 & 7 \\0 & 1 & 0 & - 9 \\0 & 0 & 1 & \frac { 1 } { 9 }\end{array} \right]$$

• A) \(x = - 7\)
• \(y = 9\)
• \(z = - \frac { 1 } { 9 }\)
• B) \(x = - 7\)
• \(y = - 9\)
• \(z = \frac { 1 } { 9 }\)
• C) \(x = 7\)
• \(y = 9\)
• \(z = \frac { 1 } { 9 }\)
• D) \(x = 7\)
• \(y = - 9\)
• \(z = \frac { 1 } { 9 }\)

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