4.5: Graphing Compound Inequalities on a Number Line

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a compound inequality?
Back
A compound inequality is an inequality that combines two or more simple inequalities using the words 'and' or 'or'.
2.
FLASHCARD QUESTION
Front
What does the symbol \( \infty \) represent in inequalities?
Back
The symbol \( \infty \) represents infinity, indicating that the values extend indefinitely in the positive or negative direction.
3.
FLASHCARD QUESTION
Front
How do you graph the inequality \( (-\infty, -2] \)?
Back
To graph \( (-\infty, -2] \), draw a number line, shade all values to the left of -2, and place a closed dot on -2.
4.
FLASHCARD QUESTION
Front
What does the notation \( [a, b) \) mean?
Back
The notation \( [a, b) \) means that 'a' is included in the interval (closed), while 'b' is not included (open).
5.
FLASHCARD QUESTION
Front
How do you graph the inequality \( [5, \infty) \)?
Back
To graph \( [5, \infty) \), draw a number line, place a closed dot on 5, and shade all values to the right of 5.
6.
FLASHCARD QUESTION
Front
What is the difference between \( \cup \) and \( \cap \) in compound inequalities?
Back
The symbol \( \cup \) represents the union of sets (values that satisfy either inequality), while \( \cap \) represents the intersection (values that satisfy both inequalities).
7.
FLASHCARD QUESTION
Front
How do you graph the compound inequality \( (-\infty, -2) \cup (5, \infty) \)?
Back
To graph \( (-\infty, -2) \cup (5, \infty) \), shade all values to the left of -2 (open dot) and all values to the right of 5 (open dot).
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