Absolute Value

Lets review some basic concepts about absolute value.
The absolute value sign is | | with a number or expression between the signs.

For eample:

• |7| = 7
• |-7| = 7 The absolute value of a number is always positive. Why?  Always try to solve the problem before looking at the answer. answer
  
  
• |t| = 7 Therefore t = -7 or t = +7 Why? Always try to solve the problem before looking at the answer.  answer
  
  
• |t + 4| = 12 What does t = ?    Always try to solve the problem before looking at the answer. answer
  
  
• |r - 9| = 35   r = ?  Always try to solve the problem before looking at the answer. answer
  
  next absolute inequalities
  
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