1.	Which statement is true about the graph shown below?
		A.	The relation is a function.	B.	The range is {-3, -2, 0, 1}.
		C.	The domain is {-3, 2, 4}.	D.	The relation is not a function.
		Hint
	2.	Choose the graph that is not a function.
		A.		B.
		C.		D.
		Hint
	3.	Determine which equation represents a function.
		A.	x = y2 - 1	B.	y = -2x + 1
		C.	x = 4	D.
		Hint
	4.	In a science experiment, students hung a cup from a spring and measured the length of the spring when candies were added to it. Their data are shown in the table below. Which statement is true?
		A.	The relation is not a function because only a line can be a function.
		B.	The relation is a function because for each x value, there is exactly one y value.
		C.	The relation is not a function because there are two y values for some x values.
		D.	The relation is a function because the range values increase.
		Hint
	5.	A discrete function ___________
		A.	cannot be graphed.
		B.	is a relation that is not a function.
		C.	has a domain with an infinite number of elements.
		D.	has a domain that is a set of individual points.
		Hint