1.2 · FunctionsLesson 3 of 14
One-one functions
Each output comes from only one input. A horizontal line meets the graph at most once.
Locked
Unlock the rest of Cambridge A Level Mathematics: Pure 1 (9709 Paper 1).
- Every lesson, every resource, unlocked instantly.
- Track progress and pick up where you left off.
- Free preview lessons stay readable from the outline.