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Coolmath Algebra
Graphing Quadratics Lesson 2 - Graphing Parabolas Part 1  (page 2 of 2)
---- This algebra lesson explains how to do vertical shifts when graphing parabolas.

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YOUR TURN:

Graph these and remember to identify what's going on -- and not by plotting points.  Be sure to label 5 points like a polite math geek:

y = x^2 + 2

y = x^2 - 1

Let's sum up what we've got here:

When there's a number hanging off the end of Standard Parabola Guy...

It's a vertical shift!

y = x^2 + k

He moves up if k is positive.
He moves down if k is negative.

 

Check out this animation for a little review:

 The printing and distribution and/or downloading of these lessons is strictly prohibited.
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