7. Write the augmented matrix that corresponds to the systems. a) 2x + z = 4 +y z = -1 3x + y z = 0 (3x - z = 2 b) y + 2z = 3 8. Write the solution that corresponds to the row - reduced matrices below. If any have infinitely many solutions, then parameterize the solution. 0 0 2 a) 0 1 0 -3 0 1 4 b) 0 1 0 Lo o 0 3. c) 0 1 20 d) 24 1 2