1.	Choose the graph that is not a function.
		A.		B.
		C.		D.
		Hint
	2.	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 the range values increase.
		C.	The relation is a function because for each x value, there is exactly one y value.
		D.	The relation is not a function because there are two y values for some x values.
		Hint
	3.	Find the domain of the relation shown in the graph.
		A.	{-3, -2, -1, 0, 1, 2, 3, 5}	B.	{-3, -2, -1, 0, 1, 3}
		C.	{0, 1, 2, 3}	D.	{-2, -1, 1, 2, 3, 5}
		Hint
	4.	Is the relation shown in the graph a function? Why or why not?
		A.	Yes, the ordered pairs (-3, 2), (-1, 1), and (3, -1) form a straight line.
		B.	Yes, the relation contains very few ordered pairs.
		C.	No, the relation contains the ordered pairs (3, -1) and (3, 2).
		D.	No, the relation contains the ordered pairs (0, -1) and (3, -1).
		Hint
	5.	Graph the relation represented by y = x2 – x + 1.
		A.		B.
		C.		D.
		Hint