Solve the System of Linear Equations $$\left\{ \begin{array} { r } 2 x + 8 y - z = 2 \\- x - 3 y + z = 1 \\x + 4 y - z = 0\end{array} \right.$$

Q57: Find the inverse of the matrix

Q58: Find the partial fraction decomposition of

Q59: Find the inverse of the matrix

Q60: State whether the system of equations

Q61: Write out the form of the

Q63: Graph the solution of the system

Q64: Find all solutions for the system.

Q65: Find all the solutions for the

Q66: Graph the inequality <span class="ql-formula"

Q67: Find the inverse of the matrix.