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GCSE Mathematics · key term
A rule that assigns an output to each permitted input.
Used by AQA, Edexcel and OCR
Specification A7, A13 · Paper 1, Paper 2, Paper 3
A rule that assigns each permitted input exactly one output.
Revise: FunctionsThinking of the expression as a function helps us describe what happens when we reverse the process or follow it with another one.
A rule that assigns an output to each permitted input; denotes the output of function for input .
Specification A7 · Paper 1, Paper 2, Paper 3
A rule that assigns exactly one output to each allowed input.
Revise: Introduction to Function NotationA function is a rule that gives exactly one output for each allowed input.
A rule that maps each permitted input to one output.
Specification 6.05a, 7.01b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
A rule that assigns one output to each input.
Revise: Function NotationA function machine makes the order visible. Each box changes the number it receives, and its result passes to the next box.
means the inverse function, not .
For a horizontal translation, use the sign opposite to the one shown inside the function: moves left 3, while moves right 3.
For a vertical translation, use the sign as written outside the function: moves up 4 and moves down 4.
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