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.	-2	B.
		C.	2	D.
		Hint
	3.	What is the slope of in parallelogram ABCD?
		A.		B.
		C.		D.
		Hint
	4.	A line of best-fit should not be drawn for which of the following graphs.
		A.		B.
		C.		D.
		Hint
	5.	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.
		B.
		C.	8y = - 6x
		D.	3x + 4y = -16
		Hint
	6.	Which pair of lines graphed below are parallel?
		A.	k and m	B.	l and n
		C.	l and m	D.	k and n
		Hint
	7.	Use the scatter plot to predict the mileage of an engine with 250 horsepower.
		A.	20	B.	25
		C.	12	D.	10
		Hint
	8.	What is the slope of the line through the points A(-3, 4) and B(2, -1)?
		A.	-1	B.
		C.	-3	D.	1
		Hint
	9.	Determine the slope of the line containing the points P(-7, -8) and Q(3, 0).
		A.	-2	B.	2
		C.		D.
		Hint
	10.	The graph of a linear function is _______.
		A.	a curved line	B.	a horizontal line only
		C.	a straight line	D.	None of these is correct
		Hint
	11.	Find the equation that has direct variation.
		A.	y = –3x – 1	B.	y = 0.8x + 9
		C.	y = 4x	D.	y = 5x + 1.3
		Hint
	12.	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
	13.	Find the situation that involves a decreasing linear relationship and has direct variation.
		A.	A bucket that begins at ground level and is lowered into a well at a rate of 1 foot per second.
		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.	An airplane that begins at 20,000 feet and descends for a landing on the ground at the airport.
		Hint
	14.	Find the equation that is nonlinear.
		A.	y = 8 – x	B.	y = 14 + 6x
		C.	y = –3x – 1	D.	y = 4y2
		Hint
	15.	Find the table that represents a graph with direct variation.
		A.
		B.
		C.
		D.
		Hint
	16.	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
	17.	What is the equation of a line that has a slope of 4 and passes through (6, 3)?
		A.	y = 4x – 3	B.	y = 4x – 7
		C.	y = 4x – 27	D.	y = 4x – 21
		Hint
	18.	What is the equation of a line that has a slope of –1 and passes through (–2, 0)?
		A.	y = –x – 1	B.	y = –x + 2
		C.	y = –2x + 1	D.	y = –x – 2
		Hint
	19.	Which line is parallel to the line listed below?
		A.
		B.
		C.
		D.	y = 2x - 5
		Hint
	20.	Which three points are collinear?
		A.	(–5, 2), (1, 1), (4, 4)
		B.	(3, –1), (2, 5), (2, –3)
		C.	(1, 2), (–3, –2), (–2, –4)
		D.	(–4, 4), (0, –4), (–1, –2)
		Hint