Page 8-10: Solving Equations
1. x = -7
2. b
3.t = -15
4. -12
5. b
6.t = -10
7. r = 5
8. 13.75
9. b
10. 6 hours
Page12-14: Literal Equations
1. c
2. d
3.
4.
5.
6.
7.
8. d
9.
10.
Page 16-18: Solving Inequalities
1. c
2. d
3. d
4.
5. d
6.
7.
8.
9. a
10. c
Page 20-22: Solving Combined Inequalities
1.
2. d
3.
4.
5. b
6. c
7. b
8. An inequality does not have an equal sign, and an inequality can have more than one solution.
9. d
10.
Page 24-26: Slope
1. 0.6
2. -3
3. 3
4. $0.08 per minute
5. a
6. b
7. 3
8. 0
9. 43 miles per hour
10. undefined
Page 28-30: Slope-Intercept Form
1. a
2. b
3.
4.
5. b
6.
7.
8.
9.
10. -4
Page 32-34: Putting Equations in Slope-Intercept Form
1. b
2. b
3. a
4. d
5. 2
6.
7. Divide both sides by 4
8. a
9. 0.5
10.No. The y-intercept is correct (2), but the slope in the graph is -1. The slope should be -0.5
Page 36-38: x and y intercepts
1. x-intercept = 1, y-intercept = -3
2. a
3. b
4. a
5. x-intercept = -2.5, y-intercept = -5
6. 4.5
7. c
8. d
9. x-intercept = 7.5, y-intercept = -5
10. x-intercept = -15
Page 40-42: Relating the Slope and Y-Intercept to the Context of a Scenario
1. b
2. Slope = 3, which means that the plant grows 3cm per day.
3. d
4. d
5. The y-intercept is 100, which represents the number of words the document starts with.
6. d
7. c
8. d
9. a
10. 10
Page 44-46: Finding the Equation of a Line Given Two Points
1. b
2. c
3. c
4. 3
5. 2 p.m.
6. c
7. y = -3x – 5
8. No, because vertical lines have an undefined slope
9. y = 2x + 3
10. y = -x + 7
Page 48-50: Parallel and Perpendicular Lines
1. c
2.
3.
4. a
5. b
6. d
7. 1.5
8. 2
9. b
10.
Page 52-54: Graphing Linear Inequalities
1. b
2. a
3. c (the line should be dashed)
4. a
5. b
6. d
7.
8. The solutions to the inequality
9. c
10. There would be a solid, horizontal line at y = 4, and everything below the line would be shaded
Page56-58: Interpreting Graphs
1. b
2. d (REVISE)
3. The bike is slowing down.
4. b
5. 10 minutes
6. 6 minutes
7. 60 miles per hour
8. It would mean that there is no change in the number of calories burnt during the given time interval in which the line is flat.
9. c
10. Answers will vary.
Page 60-62: Solving Systems by Graphing
1. (4, 0)
2. a
3. d
4. d
5. b
6. H = t + 2 (spruce); H = 2t + 0.5 (oak)
7.
8. 30 hours
9. c
10. There are no solutions because the lines are parallel
Page 64-66: Substitution and Elimination
1. c
2. c
3. ,
4. 404 tickets
5. d
6. (1, 5)
7. b
8. d
9. d (caution: the slope is represented in months)
10. 8 weeks
Page 68-70: Systems of Inequalities
1.
2. The solutions form a triangle
3. Yes
4. b
5. c
6. d
7. A system of linear inequalities never has one solution
8. b
9. c
10. None
Page 72-74: Laws of Exponents
1. b
2. b
3. a
4. d
5. c
6.
7. 40
8. x = 2, y = 4 (numbers that multiply to 8)
9. 0.004096
10.
Page 76-78: Multiplying Polynomials
1. c
2. d
3.
4.
5. (No answer choice available)
6.
7. c
8. a
9.
10.
Page 80-82: Factoring Polynomials
1. a
2.
3.
4. c
5. b
6. Not Factorable (REVISE)
7. Length: x – 5y Width: x – 3y
8. a
9.
10.
Page 84-86: Square Roots and Factoring
1. c
2. a
3. 64
4. -10 and 4
5. False; you can’t take the square root of a negative number
6. 2.5 seconds
7. d
8. b
9. about 1.405 inches
10. No Solutions
Page 88-90: The Quadratic Formula
1. a
2. c
3. b
4. -0.6 and 4
5. about 1.15 seconds
6. o
7. a
8. about 3.7
9. a
10. -2 and 12
Page 92-94: Graphing Quadratic Equations
1. 2 and 3
2. c
3. a
4. 1
5. b
6. b
7. d
8. -4 and 1
9. c
10. No, because it does not have any x-intercepts, which are values for x where the population would equal 0. (DEFINE VARIABLES)
Page 96-98: Algebraic Fractions
1. d
2. a
3. 45
4. a
5. -1 and 10
6. d
7. No, it is equal to
8.
9. c
10. 2.5 hours
Practice Test 1
1.
2. d
3. d
4. c
5. a
6. -2
7. b
8. x-intercept = 12, y-intercept = 6
9. 2; The balloon is rising 2 feet per second
10.
11. a
12. d
13. c
14. d
15. b
16. -3
17.
18. c
19. -2 and 1
20. d
21. t = -3 and 0.5
22. The problem cannot be factored
23. a
24. p = -10
25. b
Practice Test 2
1. -5 and 2
2. a
3. d
4. b
5. x = 1
6. c
7.
8. The temperature increases 2 degrees per hour
9. c
10. Plot the y-intercept at 2, then use the slope (-3) and go down three and right 1 to plot another point. Then connect the dots and draw a line.
11. d
12.
13.
14. False; it depends on the value of y
15. b
16. x = 11
17. The car is stopped.
18. a
19. 4 seconds
20. x-intercept =, y-intercept =
21. b
22. c
23. approximately 3.54 and -2.54