1.	Solve .
		A.		B.	(-2, -8)
		C.		D.	(2, 8)
		Hint
	2.	What are the dimensions of matrix A if
		A.	3 × 3	B.	4 × 3
		C.	3 × 4	D.	4 × 4
		Hint
	3.	The matrix is an example of which of the following matrices?
		A.	row matrix	B.	square matrix
		C.	all of the above	D.	column matrix
		Hint
	4.	What is always true of an n × n matrix?
		A.	It is a column matrix.	B.	It has at least two rows and two columns.
		C.	It is a square matrix.	D.	It is a row matrix.
		Hint
	5.	Solve
		A.	(2, –1)	B.	(1, –2)
		C.	(–2, 1)	D.	(–1, 2)
		Hint