1.	Is the relation whose graph is shown below a function?
		A.	Yes; Each element of the range is unique.	B.	Yes; It passes the vertical line test.
		C.	No; It does not pass the vertical line test.	D.	No; The ordered pairs on not on one line.
		Hint
	2.	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
	3.	Select the relation that is a function.
		A.
		B.
		C.
		D.
		Hint
	4.	Which relation is not a function?
		A.	{10, 0), (2, 4), (-2, 4)}
		B.	{(-2, 1), (2, 3), (6, 5)}
		C.	{(1, 1), (2,2), (3, 3)}
		D.	{(2, 4), (3, 5), (2, 7)}
		Hint
	5.	Which graph is not a function?
		A.		B.
		C.		D.
		Hint