WS 4.2 A - NOHS Teachers

Name
LESSON
4.2
Date
Practice A
For use with pages 179–184
Check whether each given ordered pair is a solution of the inequality.
1. x 1 y < 4; (5, 22), (21, 6)
2. y ≤ 21; (0, 0), (3, 2)
3. x > 5; (2, 26), (6, 22)
4. y 2 2x ≥ 22; (21, 2), (3, 1)
5. 3y < 2x 1 7; (23, 21), (25, 21)
6. x ≥ 3 2 2y; (3, 0), (7, 3)
Graph the inequality in a coordinate plane.
8. x ≥ 2
7. x > 21
9. y > 3
y
y
1
y
1
1
x
1
x
1
1
x
10. 2x > 24
11. 2y < 5
12. 2x 1 3y ≤ 5
13. y ≥ 23x
14. y 2 3x > 22
15. 23y 2 6x ≤ 23
A.
3
B.
y
1
1
D.
x
1
E.
y
x
Algebra 2 Concepts and Skills
Chapter 4 Resource Book
1
F.
y
1
1
y
1
x
1
24
C.
y
y
1
2
x
x
x
1
Copyright © by McDougal Littell, a division of Houghton Mifflin Company.
LESSON 4.2
Match the inequality with its graph.
Name
Date
Practice A
LESSON
4.2
For use with pages 179–184
continued
Graph the inequality.
17. y ≤ 23x
16. y < 4x
18. y ≥ 22x 1 1
y
y
1
y
1
1
1
x
1
19. y < }x 1 2
2
1
x
y
1
x
1
x
21. x 1 4y ≤ 12
20. 2x 1 y > 1
y
1
y
1
1
x
1
x
1
Labor Laws A person less than 16 years of age can work up to 40 hours per week
according to child labor laws. A 15-year-old student plans on working two jobs this
summer, one at a fast food restaurant and one at a retail store.
22. Write and graph an inequality that represents the possible number of hours the
Retail hours
student can work. Let x represent the hours worked at the fast food restaurant and
y the hours worked at the retail store.
LESSON 4.2
Copyright © by McDougal Littell, a division of Houghton Mifflin Company.
In Exercises 22 and 23, use the following information.
45
40
35
30
25
20
15
10
5
0
0 5 10 15 20 25 30 35 40 45
Fast food hours
23. If the student works 24 hours at the fast food restaurant, what is the maximum
number of hours the student can work at the retail store?
Algebra 2 Concepts and Skills
Chapter 4 Resource Book
25