Graphing Quadratics (Parabolas) - Cool math Algebra Help Lessons

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Coolmath Algebra
Graphing Quadratics Lesson 5 - Graphing Parabolas Part 4 (page 1 of 4)
---- This algebra lesson explains how to do stretching and shrinking (wider and narrower) when graphing parabolas.

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

When there's a number multiplied in front of Standard Parabola Guy...

If a is positive, then he's

If a is negative, then he's

The value of a makes him taller or shorter.

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