IntroFoundations
Slope & Linear Functions
Overview
A refresher on slope, linear functions, and how graphs encode information — the language we will use throughout calculus.
Key Concepts
1
Slope m = rise / run = (y₂ − y₁) / (x₂ − x₁)
2
Linear functions: y = mx + b (constant slope everywhere)
3
Non-linear functions have varying slopes at different points
4
Positive slope → rising; negative slope → falling; zero → horizontal
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