1.	Which pair of lines graphed below are parallel?
		A.	l and n	B.	k and n
		C.	l and m	D.	k and m
		Hint
	2.	Find the graph that does not have direct variation.
		A.		B.
		C.		D.
		Hint
	3.	Find the situation that is linear but does not have direct variation.
		A.	At the beginning of the summer, Dina had $200 in the bank. She withdrew $30 to buy a new pair of shorts.
		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 $0 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 started a job and deposited $10 per week.
		Hint
	4.	Michael just got a job mowing his elderly neighbor's lawn paying him $10 each week. Draw a graph showing the amount he receives is increasing very rapidly. Suppose you graph the time in weeks on the horizontal axis and the amount Michael receives on the vertical axis.
		A.		B.
		C.		D.
		Hint
	5.	Pam's mother gives Pam $20 each week for lunch to be bought at the school cafeteria. Lunches cost $4 per day. Draw a graph showing the amount Pam has left decreasing very slowly. Suppose you graph the time in days on the horizontal axis and the amount Pam has left on the vertical axis.
		A.		B.
		C.		D.
		Hint
	6.	Which three points are collinear?
		A.	(3, 1), (4, 0), (–1, 2)
		B.	(–1, 1), (2, 3), (5, 2)
		C.	(4, –3), (2, –2), (–4, 1)
		D.	(–5, –3), (–2, 3), (2, –4)
		Hint