(Solved): 10. Show the matrix equation used to solve the \( 2 \times 2 \) system with matrix multiplication. ...

10. Show the matrix equation used to solve the \( 2 \times 2 \) system with matrix multiplication. \[ \begin{array}{l} 3 x+4 y=4 \\ 5 x+8 y=20 \end{array} \] \[ \left[\begin{array}{rr} 0.75 & -1 \\ -1.25 & 2 \end{array}\right]\left[\begin{array}{c} 4 \\ 20 \end{array}\right] \] \[ \left[\begin{array}{ll} 3 & 4 \\ 5 & 8 \end{array}\right]\left[\begin{array}{c} 4 \\ 20 \end{array}\right] \] \[ \left[\begin{array}{cc} 2 & -1 \\ -1.25 & 0.75 \end{array}\right]\left[\begin{array}{c} 4 \\ 20 \end{array}\right] \] \[ \left[\begin{array}{cc} 2 & 1 \\ 1.25 & 0.75 \end{array}\right]\left[\begin{array}{c} 4 \\ 20 \end{array}\right] \]