1.	Determine the slope of the line graphed below.
		A.	0	B.
		C.		D.
		Hint
	2.	Determine the slope of the line that passes through (2, 2) and (5, 8).
		A.	2	B.	-2
		C.		D.
		Hint
	3.	A line of best-fit should not be drawn for which of the following graphs.
		A.		B.
		C.		D.
		Hint
	4.	Three out of the four equations listed below are equations of lines that are parallel to each other. Which equation does not have a graph that is a line parallel to the other three?
		A.	3x + 4y = -16
		B.
		C.	8y = - 6x
		D.
		Hint
	5.	What is the slope of the line through the points A(-3, 4) and B(2, -1)?
		A.	-3	B.
		C.	-1	D.	1
		Hint
	6.	Determine the slope of the line containing the points P(-7, -8) and Q(3, 0).
		A.		B.	2
		C.	-2	D.
		Hint
	7.	The graph of a linear function is _______.
		A.	a horizontal line only	B.	a straight line
		C.	a curved line	D.	None of these is correct
		Hint
	8.	Which characteristic describes a graph that is linear and has direct variation.
		A.	Variables x and y are not proportional.
		B.	The graph does not pass through (0, 0).
		C.	The equation has the form y = mx + b.
		D.	The equation has the form y = mx.
		Hint
	9.	Find the equation that has direct variation.
		A.	y = 4x	B.	y = 0.8x + 9
		C.	y = 5x + 1.3	D.	y = –3x – 1
		Hint
	10.	Find the equation that has direct variation.
		A.	y = 4x	B.	y = 5x + 1.3
		C.	y = –3x – 1	D.	y = 0.8x + 9
		Hint
	11.	Find the equation that contains a decreasing linear relationship.
		A.	y = 4x – 3	B.	y = 10 + x
		C.	y = 5 – 6x	D.	y = 12+ 2x
		Hint
	12.	Find the situation that involves a decreasing linear relationship and has direct variation.
		A.	A submarine that begins at the bottom of the ocean and is raised to the surface of the water at 15 meters per second.
		B.	The temperature that begins at 0°F at 6:00 a.m. rises 3°F every hour for 6 hours.
		C.	An airplane that begins at 20,000 feet and descends for a landing on the ground at the airport.
		D.	A bucket that begins at ground level and is lowered into a well at a rate of 1 foot per second.
		Hint
	13.	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 $200 in the bank. She started a job and deposited $10 per week.
		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 $0 in the bank. She earned $50 mowing lawns the previous week and deposited the money in the bank.
		Hint
	14.	Find the graph that is nonlinear.
		A.		B.
		C.		D.
		Hint
	15.	Find the equation that is nonlinear.
		A.	y = –3x – 1	B.	y = 14 + 6x
		C.	y = 4y2	D.	y = 8 – x
		Hint
	16.	Find the table that represents a graph with direct variation.
		A.
		B.
		C.
		D.
		Hint
	17.	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
	18.	Which three points are collinear?
		A.	(4, –3), (2, –2), (–4, 1)
		B.	(–5, –3), (–2, 3), (2, –4)
		C.	(3, 1), (4, 0), (–1, 2)
		D.	(–1, 1), (2, 3), (5, 2)
		Hint
	19.	Which three points are collinear?
		A.	(–5, 2), (1, 1), (4, 4)
		B.	(3, –1), (2, 5), (2, –3)
		C.	(–4, 4), (0, –4), (–1, –2)
		D.	(1, 2), (–3, –2), (–2, –4)
		Hint
	20.	Write the equation in slope-intercept form. –6x = –10 – 2y
		A.	–6x + 2y + 10 = 0
		B.	y = 3x – 5
		C.	y + 8 = 3(x + 1)
		D.	y = 3x + 8
		Hint