Functions · Year 11

In Year 11 you learn: function notation.

A function is a rule that turns each input into exactly one output, written like f(x) = 3x + 1. Function notation makes it easy to talk about combining rules (composite functions) and undoing them (inverse functions).

Key facts

• f(4) means substitute 4 into the function f.

Other years

• Functions · Year 12
• Functions · Year 13