1.	Which of the following is a rational function?
		A.		B.
		C.		D.
		Hint
	2.	Which of the following types of functions may have a hole?
		A.	absolute value	B.	square root
		C.	quadratic	D.	rational
		Hint
	3.	Which type of function looks like a direct variation function when x > 0?
		A.	square root function	B.	rational function
		C.	quadratic function	D.	absolute value function
		Hint
	4.	When will it be true that ?
		A.	always	B.	only when x is not an integer
		C.	only when x is an integer	D.	never
		Hint
	5.	What type of function is the following?
		A.	square root	B.	absolute value
		C.	quadratic	D.	inverse variation
		Hint