Use Gaussian Elimination and Matrices to Solve the System of Linear

question 93

Multiple Choice

Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution.
- $$\begin{aligned}x + y + z & = 3 \\x - y + 2 z & = 5 \\4 x + y + z & = - 3\end{aligned}$$

• A)(-2, 1, 4)
• B)(-2, 4, 1)
• C)(4, -2, 1)
• D)(4, 1, -2)

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A type of white blood cell that produces antibodies in response to an infection, thus playing a crucial role in the immune response.

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A type of lymphocyte that remains in the body for a long time after infection or vaccination, providing immunity by remembering the pathogen.

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