Algebra 2 Parabolas With Absolute Value Considerations
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Absolutely
Parabolas With Absolute Value Considerations

 

 Sometimes we have equations where the right side

 is inside absolute value lines.
 Like:

 Y = |X2 - 4|

 
 So what happens then?
 
 What we do is ...
 
 Step 1)
 Graph the equation without the absolute value lines.
 

 

 
 Step 2)
 Pretend the X axis is a mirror.
 Everything that is below it gets reflected back the same distance above it.

 

 
 That's it!
 If the equation without the absolute value lines included the point (1,-3),
 the equation with the absolute value lines includes the point (1,3).

 

 
 Ya know, this reflection stuff will work with ANY equation like this ...

 

 

   copyright 2005 Bruce Kirkpatrick

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