1.	The slope m of a line containing any two points with coordiantes (x1, y1) and (x2, y2) is given by which formula?
		A.	slope = , where	B.	slope = , where
		C.	slope = , where	D.	slope = , where
		Hint
	2.	Determine the slope of the line through points at (2, -5) and (2, 3).
		A.	undefined	B.
		C.	0	D.	-2
		Hint
	3.	A line passes through the origin of a coordinate system. The slope of the line is 0. What is the equation of this line?
		A.	y = 0	B.	y = x
		C.	y = –x	D.	x = 0
		Hint
	4.	To find the y-intercept of the graph of an equation, you should _______.
		A.	let x = –1 in the equation and solve for y	B.	let x = 0 in the equation and solve for y
		C.	multiply the coefficients of x and y	D.	let y = 0 in the equation and solve for x
		Hint
	5.	The graphs of the equations y = –5x + 1 and are a family of graphs because ________.
		A.	the y-intercepts are the same	B.	the slopes are integers
		C.	both equations are solved for y	D.	the slopes are reciprocals
		Hint
	6.	Consider the equation . Which equation will have a steeper graph, but the same y–intercept?
		A.		B.
		C.		D.
		Hint
	7.	Write the point-slope form of an equation of the line in the graph. Use (-2, 0) for (x1, y1).
		A.	y = (x + 2)	B.	y + 2 = x
		C.	y = (x – 2)	D.	y – 2 = x
		Hint
	8.	Write an equation in slope–intercept form of the line with slope -5 that passes through the point at (2, 3).
		A.	y = -5x –7	B.	y = 4x – 5
		C.	y = 16x – 5	D.	y = -5x + 13
		Hint
	9.	Write an equation in slope–intercept form of the line that passes through the points at (-5, 4) and (3, -1).
		A.	y = x –	B.	x = -y +
		C.	y = -x +	D.	x = y –
		Hint
	10.	If a line is drawn through points on a scatter plot and a positive relationship is shown, then _____.
		A.	as the values of x increase, the values of y increase
		B.	the slope of the line is 0
		C.	the slope of the line is undefined.
		D.	as the values of x increase, the values of y decrease
		Hint
	11.	The scatter plot shows the relationship between number of weekly meals at fast food restaurants and blood cholesterol level for 25 adults in a correlational study. Describe the independent and dependent variables of the graph and what the graph indicates.
		A.	The independent variable is the number of meals per week at a fast food restaurant. The dependent variable is blood cholesterol level. In the study, people who ate more often at fast food restaurants generally had lower blood cholesterol levels.
		B.	The independent variable is blood cholesterol level. The dependent variable is the number of meals per week at a fast food restaurant. In the study, people who ate more often at fast food restaurants generally had higher blood cholesterol levels.
		C.	The independent variable is blood cholesterol level. The dependent variable is the number of meals per week at a fast food restaurant. In the study, people who ate more often at fast food restaurants generally had lower blood cholesterol levels.
		D.	The independent variable is the number of meals per week at a fast food restaurant. The dependent variable is blood cholesterol level. In the study, people who ate more often at fast food restaurants generally had higher blood cholesterol levels.
		Hint
	12.	Find the equation of the graph in slope-intercept form.
		A.	y = 3x + 2	B.	y = 2x + 3
		C.	y = 2x – 3	D.	y = 3x – 2
		Hint
	13.	What would the slope of have to be for JKLM to be a trapezoid?
		A.		B.
		C.	-	D.	-
		Hint
	14.	Which equation is parallel to the graph of y = 2x + and passes through the point (4, 7)?
		A.	y = x +	B.	y = -x +
		C.	y = 2x – 1	D.	y = 2x + 3
		Hint