1 Quiz 3 - MathnMind

14
Name ——————————————————————— Date ————————————
CHAPTER
1
Graph the inequality. Locate 0 fi rst.
1. x > 6
2. 22 ≤ x < 5
3. x < 23 or x ≥ 7
Solve the inequality. Then graph the solution.
4. 2x 1 5 < 12 5. 3(x 2 5) ≤ 7 2 3x
6. 22 ≤ 1
} x 2 2 < 3 7. 2x 2 6 < 4 or
5 3
} x 2 6 > 6
2
Tell whether the statement is always, sometimes, or never
true.
8. ⏐x⏐< x 2 1 9. ⏐x 2 2⏐≤⏐x⏐ 2 2
Solve the equation.
10. ⏐q 2 13⏐ 5 5 11. ⏐ 1
} x 2 4⏐ 5 12
8
Solve the inequality. Then graph the solution. Locate 0 fi rst.
12. ⏐x 2 9⏐ ≥ 6 13. ⏐4x 2 5⏐ < 15
14. One weight class at a wrestling match has wrestlers that weigh
between 152 pounds and 160 pounds, inclusive. Write an absolute
value inequality describing the acceptable weight in this class.
Algebra 2
IDEA! Works
Quiz 3
For use after Lessons 1.621.7
Answers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
See left.
See left.
See left.
See left.
See left.
See left.
See left.
See left.
See left.
Copyright © Holt McDougal Math. All rights reserved.

Copyright © Holt McDougal Math. All rights reserved.
Lesson 1.7, continued
5. The monthly pass is less expensive when you
ride the bus at least 37 times in a month. Solve the
inequality 45 < 1.25x. This tells you that you have
to ride the bus more than 36 times for the monthly
pass to be less expensive. Because you cannot ride
a bus a fraction of a time, you must ride the bus
at least 37 times for the monthly pass to be less
expensive. 6. a. A 5 120 – 15w b. 8 weeks
Quiz 3
1.
2.
3.
0 1 2 3 4 5 6 7 8 9 10
25 24 23 22 21 0 1 2 3 4 5
23
26 24 22 0 2 4 6 8 10 12 14
4. x > 27;
5. x ≤ 11
}
3 ;
6. 0 ≤ x < 25;
27
7. x < 5 or x > 8;
210 28 26 24 22 0 2 4 6
24 2322 21 0 1 2 3 4
7
11
3
25 0 5 10 15 20 25 30 35
2 3 4 5 6 7 8 9 10
8. always 9. sometimes 10. 8, 18
11. 264, 128
12. x ≤ 3 or x ≥ 15;
13. 2 5
} < x < 5;
2
14. ⏐x 2 156⏐ ≤ 4
5
2
2
23 0 3 6 9 12 15 18 21
23 2221 0 1 2 3 4 5
Standardized Test A, Chapter 1
1. B 2. C 3. C 4. B 5. A 6. B 7. B
8. B 9. A 10. C 11. C 12. B 13. B
14. B 15. A 16. 1.6 17. a. h 5 3V
} b. 6 in.
B
18. a. 400 1 50v b. 400 1 50v . 1200
c. 17 vacuum cleaners
Lesson 2.1
Practice A
1. domain: 23, 21, 2; range: 0, 1, 4
2. domain: 22, 0, 2; range: 0, 1, 3
3. domain: 1, 3, 5; range: 1, 2
4. domain: 22, 3; range: 1, 4, 5
5. is a function 6. is not a function
1
y
1
x
7. is a function 8. is a function
y
9. is not a function
10. is a function
11.
13.
15.
17.
Population (billions)
8
7
6
5
4
3
2
1
2
1
2
1
y
y
y
1
1
1
1
0
0 1960 1980
Year
2000 2020
Lesson 2.2
x
x
x
x
12.
14.
16.
Practice A
1. 2 2. 0 3. −1 4. 2 5. 22 6. 1
} 7. 2
4 3
}
2
8. rises 9. falls 10. is horizontal 11. rises
12. is vertical 13. perpendicular 14. neither
15. parallel 16. perpendicular 17. yes
2
1
1
1
y
y
y
y
2
1
1
2
x
x
x
x
ANSWERS
Algebra 2
IDEA! Works A3