1.	An equation whose graph is a straight line is called a(n)________.
		A.	linear equation	B.	standard equation
		C.	ordered equation	D.	relation
		Hint
	2.	Which graph represents the equation y = -x + 4?
		A.		B.
		C.		D.
		Hint
	3.	Which equation describes the graph?
		A.	x = -2	B.	x = 2
		C.	y = -2	D.	y = 2
		Hint
	4.	Which is true of the equation y = cx where c is a constant?
		A.	The graph will always cross the x-axis at exactly one point.	B.	The graph will be decreasing.
		C.	The graph will be increasing.	D.	The graph passes through the origin.
		Hint
	5.	Jasper has a firm belief that when two people have their first long phone conversation, they each spend the total time on the phone plus 3 minutes talking about television-related topics. Jasper just had his first telephone conversation with Alicia. If they talked on the phone for 48 minutes, how long would they have had to talk about television-related topics to support Jasper's theory?
		A.	9 minutes	B.	15 minutes
		C.	14 minutes	D.	12 minutes
		Hint