Topic

Transformations of quadratic functions

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Overview

Foundations of Mathematics 11
3. Graphical analysis
3.2 Transformations of quadratic functions

Transformations of Quadratic Functions

See how shifting, stretching, compressing, and reflecting the parent parabola y equals x squared builds every quadratic graph you will ever sketch.


What You'll Learn

Every quadratic graph is a transformation of the parent function y equals x squared
Vertex form y equals a times the quantity x minus h squared plus k shows the transformations directly through a, h, and k
The value of k shifts the parabola up or down, and h shifts it left or right
The value of a stretches or compresses the parabola vertically and flips it over the x axis when a is negative
Applying shifts and stretches in the correct order lets you graph any quadratic function starting from the parent parabola

What You'll Practice

1

Graphing reflections of parabolas across the x-axis

2

Applying vertical expansions and compressions to quadratic graphs

3

Translating parabolas horizontally and vertically using shifts

4

Combining multiple transformations in a single equation

5

Finding vertex coordinates from transformed quadratic equations

Why This Matters

Transforming quadratic functions is essential for modeling real-world phenomena like projectile motion, profit optimization, and engineering designs. Mastering these transformations gives you the power to quickly sketch and analyze parabolas without plotting dozens of points, a skill you'll use throughout algebra, precalculus, and calculus.

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This Unit Includes

3 Video lessons
Practice exercises
Learning resources

Skills

Quadratic Functions
Transformations
Vertex Form
Reflections
Translations
Vertical Stretch
Horizontal Shift
Graphing Parabolas
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