1.	State the amplitude for the function y = - cos.
		A.	1	B.	-
		C.	-	D.
		Hint
	2.	State the period for the function .
		A.	16	B.	4
		C.	8	D.	2
		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 3
		C.	y = ±3 cos	D.	y = ±3 cos
		Hint
	5.	Graph y = 5 cos 2 for 1 period of the function.
		A.
		B.
		C.
		D.
		Hint