1.	Choose the relation that is a function.
		A.		B.
		C.		D.
		Hint
	2.	Determine which equation represents a function.
		A.	x = y2 - 1	B.	x = 4
		C.		D.	y = -2x + 1
		Hint
	3.	If f(x) = 2x - 2, find 2[f(3)].
		A.	8	B.	10
		C.	4	D.	2
		Hint
	4.	Find if f(x) = -12x +
		A.	1	B.	-9
		C.	0	D.	-8
		Hint
	5.	Find f(x – 7) if f(x) = -4x – 10.
		A.	-4x + 18	B.	4x + 3
		C.	4x – 38	D.	-4x – 17
		Hint