1.	Determine the slope of the line graphed below.
		A.		B.
		C.	0	D.
		Hint
	2.	Determine the slope of the line that passes through (2, 2) and (5, 8).
		A.		B.	-2
		C.	2	D.
		Hint
	3.	A line of best-fit should not be drawn for which of the following graphs.
		A.		B.
		C.		D.
		Hint
	4.	Which equation is the slope-intercept form of the equation of the line that passes through (1, 2) and is parallel to 4x - 2y = 6?
		A.	y = 4x + 3	B.
		C.	y = 2x	D.	y = -2x + 1
		Hint
	5.	Which pair of lines graphed below are parallel?
		A.	l and m	B.	k and n
		C.	k and m	D.	l and n
		Hint
	6.	Use the scatter plot to predict the mileage of an engine with 250 horsepower.
		A.	12	B.	25
		C.	20	D.	10
		Hint
	7.	Which characteristic describes a graph that is linear and has direct variation.
		A.	The graph does not pass through (0, 0).
		B.	The equation has the form y = mx + b.
		C.	The equation has the form y = mx.
		D.	Variables x and y are not proportional.
		Hint
	8.	Find the equation that has direct variation.
		A.	y = 5x + 1.3	B.	y = 0.8x + 9
		C.	y = –3x – 1	D.	y = 4x
		Hint
	9.	Find the equation that has direct variation.
		A.	y = 5x + 1.3	B.	y = 0.8x + 9
		C.	y = 4x	D.	y = –3x – 1
		Hint
	10.	Find the equation that contains a decreasing linear relationship.
		A.	y = 10 + x	B.	y = 5 – 6x
		C.	y = 12+ 2x	D.	y = 4x – 3
		Hint
	11.	Find the situation that involves a decreasing linear relationship and has direct variation.
		A.	An airplane that begins at 20,000 feet and descends for a landing on the ground at the airport.
		B.	A submarine that begins at the bottom of the ocean and is raised to the surface of the water at 15 meters per second.
		C.	The temperature that begins at 0°F at 6:00 a.m. rises 3°F every hour for 6 hours.
		D.	A bucket that begins at ground level and is lowered into a well at a rate of 1 foot per second.
		Hint
	12.	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 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 withdrew $30 to buy a new pair of shorts.
		D.	At the beginning of the summer, Dina had $0 in the bank. She started a job and deposited $10 per week.
		Hint
	13.	Find the equation that is nonlinear.
		A.	y = 14 + 6x	B.	y = –3x – 1
		C.	y = 8 – x	D.	y = 4y2
		Hint
	14.	Find the table that represents a graph with direct variation.
		A.
		B.
		C.
		D.
		Hint
	15.	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
	16.	What is the equation of a line that has a slope of 4 and passes through (6, 3)?
		A.	y = 4x – 21	B.	y = 4x – 3
		C.	y = 4x – 7	D.	y = 4x – 27
		Hint
	17.	What is the equation of a line that has a slope of –1 and passes through (–2, 0)?
		A.	y = –2x + 1	B.	y = –x + 2
		C.	y = –x – 2	D.	y = –x – 1
		Hint
	18.	What is the equation of a line that has a slope of 3 and passes through (–4, –3)?
		A.	y = 3x – 9	B.	y = 3x – 3
		C.	y = 3x + 9	D.	y = 3x + 3
		Hint
	19.	Which three points are collinear?
		A.	(–1, 1), (2, 3), (5, 2)
		B.	(3, 1), (4, 0), (–1, 2)
		C.	(4, –3), (2, –2), (–4, 1)
		D.	(–5, –3), (–2, 3), (2, –4)
		Hint
	20.	Write the equation in slope-intercept form. –6x = –10 – 2y
		A.	y = 3x + 8
		B.	–6x + 2y + 10 = 0
		C.	y + 8 = 3(x + 1)
		D.	y = 3x – 5
		Hint