Here are four sketches representing various proportionality relationships.
P
Q
R
S
Note: Graph P is a parabola starting at the origin, Graph Q is a hyperbola, Graph R is a straight line through the origin, and Graph S shows a curve asymptotic to both axes steeper than Q.
Match each graph with a statement in the table below.
| Proportionality relationship | Graph letter |
|---|---|
| y y\,y is directly proportional to xxx | |
| y y\,y is inversely proportional to xxx | |
| y y\,y is directly proportional to x2x^2x2 | |
| y y\,y is inversely proportional to x2x^2x2 |
43 exam-style questions on AQA GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.