1.	Which element is in row 3, column 1?
		A.	-1	B.	4
		C.	6	D.	9
		Hint
	2.	Choose the matrix that represents the ordered triple (5, -7, 1).
		A.	[1 -7 5]	B.
		C.	[5 -7 1]	D.
		Hint
	3.	What are the dimensions of matrix A if
		A.	3 × 3	B.	3 × 4
		C.	4 × 4	D.	4 × 3
		Hint
	4.	The matrix is an example of which of the following matrices?
		A.	all of the above	B.	column matrix
		C.	row matrix	D.	square matrix
		Hint
	5.	What is always true of an n × n matrix?
		A.	It is a row matrix.	B.	It is a column matrix.
		C.	It is a square matrix.	D.	It has at least two rows and two columns.
		Hint