ax+bLinear Functions Lab

Change at a constant speed

Why does this exist?

Base fare plus a per-unit rate — phone plans and taxi meters are all straight lines. Slope is the seed of the derivative.

Part of the Journey of Relations — When one thing changes, how does another respond?

🔬 The interactive lab is live — currently in Korean

Sliders and simulations speak every language. Most visitors can follow the experiment even without reading Korean — and a full English version of this lab is on the way.

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