1.	Two numbers grouped together like (2, 5) are called ______.
		A.	y-coordinates
		B.	x-coordinates
		C.	a coordinate system
		D.	an ordered pair
		Hint
	2.	The origin O is represented by which ordered pair?
		A.	(1, 0)	B.	(0, 0)
		C.	(1, 1)	D.	(0, 1)
		Hint
	3.	Name the ordered pair for point A.
		A.	(4, 1)	B.	(1, 4)
		C.	(4, 2)	D.	(2, 4)
		Hint
	4.	What is the range of the relation {(-1, 5), (2.3, 8.7), (5.1, -7.2),(6, -12.5)}.
		A.	{-12.5, -7.2, -1, 2.3, 5, 5.1, 6, 8.7}
		B.	{-6.5, -2.1, 4, 11}
		C.	{-12.5, -7.2, 5, 8.7}
		D.	{-1, 2.3, 5.1, 6}
		Hint
	5.	Graph the relation.
		A.		B.
		C.		D.
		Hint