1.	The graph of a linear function is _______.
		A.	a curved line	B.	a horizontal line only
		C.	None of these is correct	D.	a straight line
		Hint
	2.	Which characteristic describes a graph that is linear and has direct variation.
		A.	The equation has the form y = mx.
		B.	The graph does not pass through (0, 0).
		C.	Variables x and y are not proportional.
		D.	The equation has the form y = mx + b.
		Hint
	3.	Find the graph that does not have direct variation.
		A.		B.
		C.		D.
		Hint
	4.	Find the graph that is nonlinear.
		A.		B.
		C.		D.
		Hint
	5.	Find the table that represents a graph with direct variation.
		A.
		B.
		C.
		D.
		Hint