1.	Is the relation whose graph is shown below a function?
		A.	No; The ordered pairs on not on one line.	B.	Yes; Each element of the range is unique.
		C.	No; It does not pass the vertical line test.	D.	Yes; It passes the vertical line test.
		Hint
	2.	Determine whether the relation is a function. Explain.
		A.	No, because there are two elements in the domain that are paired with the same element in the range.
		B.	Yes, because every relation is a function.
		C.	No, because there is an element in the domain that is paired with two elements in the range.
		D.	Yes, because each element in the domain is paired with exactly one element in the range.
		Hint
	3.	Determine whether the graph is a function. Explain.
		A.	Yes, the graph passes the vertical line test.	B.	The graph does not provide enough information.
		C.	No, the graph fails the vertical line test.	D.	No, because there are two elements in the domain that are paired with the same element in the range.
		Hint
	4.	Which relation is not a function?
		A.	{(2, 4), (3, 5), (2, 7)}
		B.	{(1, 1), (2,2), (3, 3)}
		C.	{(-2, 1), (2, 3), (6, 5)}
		D.	{10, 0), (2, 4), (-2, 4)}
		Hint
	5.	Which of the following is (are) true about functions?
		A.	In a function, each member of the domain is paired with one and only one member of the range.	B.	Functions are relations.
		C.	All of these	D.	Functions pass the vertical line test.
		Hint