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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. What is an absolute value?
  3. 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.