1.	Which equation is a direct variation?
		A.	y = x - 2	B.	x + y = 1
		C.	y = 3 + 8x	D.	y = -5x
		Hint
	2.	An equation of the form xy = k, where k0, is called a(n) _____.
		A.	inverse variation	B.	proportional variation
		C.	inconsistant variation	D.	direct variation
		Hint
	3.	Write an equation that relates the following ordered pairs.
		A.	y = y + 7	B.	y = 2x + 7
		C.	y = 4y - 13	D.	y = 3y + 9
		Hint
	4.	Find the rule for the function table.
		A.		B.
		C.	n − 2	D.	2n
		Hint
	5.	Which graph is not a function?
		A.		B.
		C.		D.
		Hint