Economics Mathematics Skills Pretest

# Graph Skills Pretest For Introductory Economics

Directions
This test contains 26 multiple choice questions. For each of the following questions, select the correct answer by clicking on the button to the left (or below in one question) of that answer. After you have finished the entire examination, click on the check button at the bottom of the page to receive your score.

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1. Given the equation y = ax + b, the slope of the line is:
 y a b x a/b
2. The slope of the line y = 7x - 6 is:
 7 -6 13 6/7 x
3. Point A is (4, 1). Point B is (2, 5). The slope of the line that connects these two points is:
 2 1 -2 -1 -1/2
Use the following graph for questions 4-6.
 The point (3,2) is: R S T V W The origin is: R S T V W
1. The point on the y axis is:
 S T V W

2. Which of the following is the graph of the equation y = 20 + x.
(click on the button below the correct answer.)    3. What is the equation of the line shown in the graph below?
 y = 10 + 5x y = 10 - 5x y = 10 - x y = 50 - x y = 10 + (1/5)x 4. What is the slope of the line AB in the following graph?
 3 2 -1/2 -2 -3 5. In the graph below, the slope of the line AB is:
 positive negative infinite zero can't be determined 6. In the graph below, the slope of the line
 0 1 2 undefined 1000 Use this graph for questions 12-16
 At point A, what is the price? \$1 \$300 \$3 \$600 \$5 At point A, what is the quantity? 1 300 3 600 5
1. The supply line intersects the y axis at a price equal to:
 \$1 \$2 \$3 \$4 \$5
2. At what quantity do the supply and demand lines intersect?
 \$2 \$4 500 \$1 300
3. At a price of \$1, approximately what is quantity demanded?
 300 400 500 600 700
Use this graph for questions 17-22
 At which point is the slope of the curve negative? P Q R S T At which point is the slope of the curve positive? R S T V
1. At which point is the slope of the curve zero?
 P Q S T V
2. Which point lies on a part of the curve that has a decreasingly positive slope?
 Q R S T V
3. At what point is the straight line tangent to the curve?
 P S V W T
4. Which point is a maximum point for the curve?
 P R S T V
Use this graph for questions 23-24
In the graph below, the line S shifts from its initial position of S0 to its final position at S1. Line S, at its initial position, intersects line D at point A. After the shift from S0 to S1 the point of intersection shifts to point B.
 As you shift from the intersection at point A to the intersection at point B, how does the quantity change? increases decreases remains the same As you shift from the intersection at point A to the intersection at point B, how does the price change? increases decreases remains the same
 In the graph at the right, the line A shifts from its initial position of A0 to its final position at A1. If initially the equation of line A is y = mx + b, what must have changed in this equation for this sort of shift to occur. y m x b none of these
 In the graph at the right, the line B shifts from its initial position of B0 to its final position at B1. If initially the equation of line B is y = mx + b, what must have changed in this equation for this sort of shift to occur. y m x b none of these

Mathematics Skills Tutorial
Your results of this pretest may have indicated that you should review all or some of the Graph Skills Tutorials. If you need to review any of this tutorial click on the button below. This will take you to the table of contents for the Graph Skills tutorial.

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