Function

A rule that assigns each input exactly one output.

Domain

All possible inputs.

Range

All possible outputs.

28. Quadratic

A function with an 𝑥 2 term. Example: 𝑦 = 𝑥 2 + 3 𝑥 + 2

Vertex

The highest or lowest point of a parabola.

30. Intercept

Where a graph crosses an axis. x‑intercept: crosses x‑axis y‑intercept: crosses y‑axis