1.	Which characteristic describes a graph that is linear and has direct variation.
		A.	The equation has the form y = mx.
		B.	The equation has the form y = mx + b.
		C.	Variables x and y are not proportional.
		D.	The graph does not pass through (0, 0).
		Hint
	2.	Find the equation that has direct variation.
		A.	y = 0.8x + 9	B.	y = 5x + 1.3
		C.	y = 4x	D.	y = –3x – 1
		Hint
	3.	Find the graph that does not have direct variation.
		A.		B.
		C.		D.
		Hint
	4.	Find the situation that is linear but does not have direct variation.
		A.	At the beginning of the summer, Dina had $0 in the bank. She started a job and deposited $10 per week.
		B.	At the beginning of the summer, Dina had $0 in the bank. She earned $50 mowing lawns the previous week and deposited the money in the bank.
		C.	At the beginning of the summer, Dina had $200 in the bank. She started a job and deposited $10 per week.
		D.	At the beginning of the summer, Dina had $200 in the bank. She withdrew $30 to buy a new pair of shorts.
		Hint
	5.	Find the graph that is nonlinear.
		A.		B.
		C.		D.
		Hint