College Algebra / Unit 5 Alg 288 short lesson, about 20 seconds
Horizontal Stretches and Compressions
Captions available
The idea
A constant multiple on the input scales the graph horizontally backward: a constant over 1 compresses, a constant under 1 stretches.
In practice
g(x) = f(2x) with f(x) = x²: the output 1 now arrives at x = 1/2, since (2 · 1/2)² = 1. Half the width, same heights.
Your place on the trail
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Builds on
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Unlocks
- Nothing yet depends on this.
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