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Introduction to absolute value

Now Playing:Introduction to absolute value – Example 0a
Intros
  1. Introduction to Introduction to Absolute Value
  2. Introduction to Introduction to Absolute Value
    What is an absolute value?
  3. Introduction to Introduction to Absolute Value
    Absolute value of an expression
Examples
  1. Evaluate the Absolute Value of a Number

    Evaluate the following absolute values:

    i. Using a number line

    ii. algebraically

    1. |8|

    2. |-8|

    3. |0|

    4. -|5|

    5. -|-5|

Introduction to absolute value
Jump to:Notes
Notes
In this lesson, we will learn:
  • Evaluate the Absolute Value of a Number
  • Evaluate the Absolute Value of an Expression
  • Comparing Numbers Using Inequality Symbols

  • Absolute value:
    • The distance of a number from zero
    • Is always non-negative (either zero or positive)
    • Absolute value of a number xx is expressed as ∣x∣|x| or abs(x)abs(x)
  • Absolute value makes a negative number positive. Positive numbers and 0 remain unchanged.