All practice tools
Proportion
In direct proportion, everything grows by the same multiplier. In inverse proportion, one thing goes up as the other comes down.
Pancakes — recipe scaler
The recipe below serves 4. Move the slider and every ingredient scales by the same multiplier.
Inverse proportion
More workers means fewer hours. The total amount of work stays the same, so workers × hours never changes.
Test yourself
Read carefully — decide first whether it is direct or inverse proportion.