1.	State the amplitude for the function y = - cos.
		A.	-	B.	1
		C.		D.	-
		Hint
	2.	State the period for the function .
		A.	16	B.	2
		C.	4	D.	8
		Hint
	3.	State the amplitude and period for the function y = -3 sin 3.
		A.	-3;	B.	3;
		C.	-3;	D.	3;
		Hint
	4.	Write an equation of the cosine function with amplitude 3 and period 9.
		A.	y = ±3 cos	B.	y = ±3 cos
		C.	y = ±3 cos 3	D.	y = ±3 cos
		Hint
	5.	Graph y = 5 cos 2 for 1 period of the function.
		A.
		B.
		C.
		D.
		Hint