inverse proportion
What inverse proportion means in Mathematics A-Level, as defined for AQA, WJEC.
Definitions of inverse proportion
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Reference: AQA
A proportional relationship such as y = k/x or y = k/x², where given points can be used to find the constant of proportionality k.
Translates to y = k/x (or xy = k), yielding a rectangular hyperbola with coordinate axes as horizontal and vertical asymptotes.
Topics that use inverse proportion
- B: Algebra and functions (AQA A-Level)
- Algebra and Functions (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- Asymptotes
- Completing the square
- critical values
- direct proportion
- Discriminant
- Factor theorem
- Graph transformations
- graphical intersections
Using inverse proportion in the exam
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