Use Inverses to Solve Matrix Equations
Write the Linear System

Multiple Choice

Use Inverses to Solve Matrix Equations
Write the linear system as a matrix equation in the form AX = B, where A is the coefficient matrix and B is the
constant matrix.
- $$\left[ \begin{array} { r r } 8 & 2 \\3 & - 6\end{array} \right] \left[ \begin{array} { l } x \\y\end{array} \right] = \left[ \begin{array} { l } 6 \\9\end{array} \right]$$

A) $8 x + 2 y = 6$
$3 x - 6 y = 9$
B) $8 x + 2 y = - 6$
$3 x - 6 y = - 9$
C) $2 x + 8 y = 6$
$3 x - 6 y = 9$
D) $8 x + 2 y = 6$
$- 6 x + 3 y = 9$