Systems of Equations True or False

1.	Which matrix is the identity matrix? -> True False
2.	Find the determinant of -> -38 True False
3.	The matrix came from what elementary row operation on -> True False
4.	How many elementary row operations are required to reduce the following matrix to row echelon form? -> 4 True False
5.	In row echelon form of a system of equations in four variables, what is the minimum number of zeros in the final matrix? -> 4 True False
6.	In reduced row echelon form of a system of equations in four variables, what is the minimum number of zeros in the final matrix? -> 12 True False
7.	Solve -> (-1, 2) True False
8.	Solve -> (2, -1, 5) True False
9.	What elementary row operation is not allowed in matrices? -> Crossing a row out True False
10.	The augmented matrix uses what numbers? -> Inverse True False

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