Question

Explain, in complete sentences, which method you would use to solve the following system of equations and why you chose that method. Provide the solution to the system.

x - 3y + 4z = -9
2x + y + 3z = 6
x - 4y + 3z = -9

What do D'8

Answer 1

I would use matrix

Answer 2

How would you use a matrix?

Answer 3

\[A=\left(
\begin{array}{ccc}
1 & -3 & 4 \\
2 & 1 & 3 \\
1 & -4 & 3
\end{array}
\right)\]

\[x=\left(
\begin{array}{c}
x \\
y \\
z
\end{array}
\right)\]

\[B=\left(
\begin{array}{c}
-9 \\
6 \\
-9
\end{array}
\right)\]

Answer 4

\[Ax=B\]
\[x=A^{-1}B\]

Answer 5

Have you learned Matrix yet?