1. Determine whether the matrix is in row echelon form, reduced row echelon form, both, or neither. 1 2 0 1 0 i -3 7 1 a. |0 1 0 b.]l0 1 c.l0 1 4 0 (I 0o 2 o 0 o0 1 1 2 3 1 0 0 =3 1 -2 0 1 d ([0 0 0 eelO 1 0 O f. o 0 1 -2 0o 0 1 o o0 1 7 1 2 3 4 5 1 -3 0 0 1 0 1 0 7 1 3 g. h]0 0 0 1 i. |0 1 o 0 0 0 1 o o0 1 o0 0o 0 O O 0 0 0 O 2. Solve each system by Gauss-Jordan elimination. Assume matrices already presented in augmented matrix form correspond to linear systems in x, y, & z. For systems having infinitely many solutions, express your answer using parametric equations. 1.0 0 =3 x+y+2z=8 2y+3z=1 a. [0 1 O 0 b. -x2y+3z=1 c. 3x+6y3z=-2 00 1 7 3x7y+4z=10 6x+6y+3z=5