1.	Is the relation whose graph is shown below a function?
		A.	No; It does not pass the vertical line test.	B.	Yes; It passes the vertical line test.
		C.	No; The ordered pairs on not on one line.	D.	Yes; Each element of the range is unique.
		Hint
	2.	Determine whether the relation {(7, 2), (-10, 3), (-5, -1), (7, 3)} is a function. Explain.
		A.	Yes, because each element in the domain is paired with exactly one element in the range.
		B.	No, because there is an element in the domain that is paired with two elements in the range.
		C.	No, because there are two elements in the domain that are paired with the same element in the range.
		D.	Yes, because every relation is a function.
		Hint
	3.	Determine whether the graph is a function. Explain.
		A.	The graph does not provide enough information.	B.	No, the graph fails the vertical line test.
		C.	No, because there are two elements in the domain that are paired with the same element in the range.	D.	Yes, the graph passes the vertical line test.
		Hint
	4.	Which of the following is (are) true about functions?
		A.	Functions pass the vertical line test.	B.	Functions are relations.
		C.	In a function, each member of the domain is paired with one and only one member of the range.	D.	All of these
		Hint
	5.	Which graph is not a function?
		A.		B.
		C.		D.
		Hint