Determine whether the following matrices are in echelon form, reduced echelon form or not in echelon form. -8 1 1 0 a. Echelon Form 0 1 -3 0 0 00 -5 9 1 1 b. Not in Echelon Form 166 0 0 1 7 c. Echelon Form 010 001-5, }] 103 0 000 0 d. Not in Echelon Form 010 001 0

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