Absolute Value

Absolute Value


Basics
Absolute Value of x = |x| = distance of x from zero on a number line

absolute value of x = |x| = x
absolute value of -x = |-x| = x
absolute value 0f x = absolute value of -x
|x| = |-x| = x

absolute value of 3 = |3| = 3
absolute value of -3 = |-3| = 3
absolute value 0f 3 = absolute value of -3
|3| = |-3| = 3
Absolute Value


Question

What is |7|?

Answer
7
|7|


Question
What is |-7|?

Answer
7
|-7|


Question
What is -|3|?

Answer
-3

Answer Process
This is a trick question.
The absolute value operation inside | | is performed first; the negative sign operation is performed last.
-|3| = -3


Question
What is -|-3|?

Answer
-3

Answer Process
This is a trick question.
The absolute value operation inside | | is performed first; the negative sign operation is performed last.
-|-3| = -3


Practice – Questions

1.  What is |8|?

2.  What is |-8|?

3.  What is -|8|?

4.  What is -|-8|?

5.  |4| = |-4|      True or False?


Practice – Answers
1.  8

2.  8

3.  -8

4.  -8

5.  True

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