MA16-10 Maths Coming soon
Graphs of Direct and Inverse Proportion
MA16-10
This lesson is coming soon.
In this lesson
Recognise the graph shapes of direct and inverse proportion, with confident recall of the inverse-proportion shape specifically.
What it covers
- Recognising the graph of direct proportion (y=kx): a straight line through the origin
- Recognising the graph of inverse proportion (y=k/x): the two-branch reciprocal-style curve
- Weighting time disproportionately toward inverse proportion recognition specifically, since it is the documented weak point, not direct proportion
Key words
For: AQA GCSE 8300, Edexcel GCSE 1MA1, Edexcel IGCSE 4MA1, Eduqas GCSE C300, OCR GCSE J560
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8300 | R14 | Interpret the gradient of a straight-line graph as a rate of change |
| Edexcel GCSE 1MA1 | R14 | Interpret the gradient of a straight line graph as a rate of change; recognise and interpret graphs that illustrate direct and inverse proportion |
| Edexcel IGCSE 4MA1 | H2.5A | Set up problems involving direct or inverse proportion and relate algebraic solutions to graphical representation of the equations |
| Eduqas GCSE C300 | FR15 | Interpret the gradient of a straight line graph as a rate of change; recognise and interpret graphs that illustrate direct and inverse proportion |
| Eduqas GCSE C300 | HR15 | Interpret the gradient of a straight line graph as a rate of change; recognise and interpret graphs that illustrate direct and inverse proportion |
| OCR GCSE J560 | 7.04a | Construct and interpret graphs in real-world contexts. |
For teachers
This GCSE Maths lesson teaches graphs of direct and inverse proportion. By the end, students should be able to recognise the graph shapes of direct and inverse proportion, with confident recall of the inverse-proportion shape specifically. It works through two worked examples and the mistakes examiners report.