1.	In mathematics, a relation is _______.
		A.	a set of ordered pairs	B.	a set of ordered pairs with the same y-coordinates
		C.	a set of ordered pairs in which every x-coordinate equals every  y-coordinate	D.	a set of ordered pairs with the same x-ccordinates
		Hint
	2.	The set of all second coordinates, or  y-coordinates, of the ordered pairs in a relation is called the______.
		A.	domain	B.	range
		C.	related coordinates	D.	ordered coordinates
		Hint
	3.	The domain and range of the relation shown in the graph are______.
		A.	domain: {2, 1, 0, -1}; range: {-3, -1, 0, 2}	B.	domain: {-1, 0, 1, 2}; range: {-3, -1, 0, 2}
		C.	domain: {3, 1, 0, -2}; range: {-2, -1, 0, 1}	D.	domain: {-3, -1, 0, 2}; range: {-1, 0, 1, 2}
		Hint
	4.	Which is not a method for showing a relation?
		A.	graph	B.	a set of ordered pairs
		C.	table	D.	circle graph
		Hint
	5.	Choose the tables that expresses {(-3, 4), (-1, -5), (0, 2), (2, 3), (3, -4)}.
		A.		B.
		C.		D.
		Hint