Absolute Value Equations and Inequalities

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the definition of absolute value?
Back
The absolute value of a number is its distance from zero on the number line, regardless of direction. It is denoted as |x|.
2.
FLASHCARD QUESTION
Front
What does the equation |x| = a represent?
Back
It represents two possible equations: x = a and x = -a, where a is a non-negative number.
3.
FLASHCARD QUESTION
Front
What is the solution to the equation |x| = -5?
Back
No solution, because absolute value cannot be negative.
4.
FLASHCARD QUESTION
Front
How do you solve the equation |x - 3| = 7?
Back
x - 3 = 7 or x - 3 = -7, leading to x = 10 or x = -4.
5.
FLASHCARD QUESTION
Front
What is the graphical representation of |x| < 3?
Back
The solution is the interval (-3, 3) on the number line.
6.
FLASHCARD QUESTION
Front
What does the inequality |x + 1| > 4 mean?
Back
It means x + 1 < -4 or x + 1 > 4, leading to x < -5 or x > 3.
7.
FLASHCARD QUESTION
Front
What is the solution to the inequality |x| ≤ 2?
Back
The solution is the interval [-2, 2] on the number line.
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