#88 · Functions & graphs · Classes 6–12
Graphs
Graphs show how one quantity changes with another.
Graphs📐 Formula
y = f(x): read values, slopes, maxima and minima from the graph
✏️ Worked example
y = 1.5 sin x: maximum 1.5 at x = π/2.
🌍 Where it is used
Stock prices, heart-rate monitors and weather charts.
❓ Quick check
On a distance–time graph, a steeper line means…