Algebra 1 · Functions & Sequences
Function
Algebra 1 · Functions & Sequences
Definition
A function is a relation in which each input value is paired with exactly one output value.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- {(1,2),(2,4),(3,6)} is a function.
- Each x has only one y.
Key rule
No input may map to two different outputs.
Memory hook
Function = one input, one output. No sharing.