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