Lesson 2.5 – Creating & Solving Compound Inequalities
Lesson 2.5 – Creating & Solving Compound Inequalities
The Plan For Today
• Technical Difficulties?
Truth Table
• 5 Steps – See HELP! Page
• Screenshots Please!
+ PrtSc
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• 2.4 – Due Today
• Vocabulary Practice
• Lesson 2.5
• Solve compound inequalities involving AND
and OR.
• Create compound inequalities from graphs.
• Express acceptable levels with compound
inequalities.
P
Q
True
True
True
False
False
True
False
False
P OR Q
P AND Q
AND: BOTH must be true
• 2.5 Homework
OR: ONE or BOTH true
HWQ #5 – Thurs. 10/1
Unit 1 Test – Fri. 10/2
Lesson 2.5 – Creating & Solving Compound Inequalities
AND - Intersection
Lesson 2.5 – Creating & Solving Compound Inequalities
Solve the compound inequality and graph the
solutions.
≥ − < − ≤ < Lesson 2.5 – Creating & Solving Compound Inequalities
−4 < 3x + 2 ≤ 11
Lesson 2.5 – Creating & Solving Compound Inequalities
Solve the compound inequality and graph the
solutions.
OR - Union
4 − 1 < 7 8 ≥ 56
< −2 ≥ 6
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Lesson 2.5 – Creating & Solving Compound Inequalities
Homework
Write a compound inequality to represent the
indicated quality-control level, and graph the
solutions.
1. Go to my.hrw.com
The recommended alkalinity level for swimming
pool water is between 80 and 120 parts per
million, inclusive. Use the variable a in your
inequality.
3. Example & Step-by-Step
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