1.	If y varies directly as x and y = 2 when x = 4, find x when y = 4.
		A.	16	B.	8
		C.	2	D.	4
		Hint
	2.	If y varies inversely as x and y = 3 when x = 3, find y when x = 4.
		A.	1	B.	3.5
		C.	4	D.	2.25
		Hint
	3.	If p varies inversely as q and p = -8 when q = 2, find p when q = -4.
		A.	-4	B.	4
		C.	-16	D.	16
		Hint
	4.	If y varies jointly as x and z and y = 12 when x = 2 and z = 3, find y when x = - 3 and z = 0.5.
		A.	-3	B.	-18
		C.	27	D.	2
		Hint
	5.	Suppose p varies jointly as r and t. If p = 1 when r = -5 and t = 2, find t when p = 6 and r = 12.
		A.	-6.4	B.	-7.2
		C.	-5.4	D.	-5
		Hint