Covaring Quantities - Candles P and Q
- Kien Hwa
This applet allows you to see how two quantities co-vary according to an invariant relationship.
Two different candles, P and Q, lighted at the same time were burning at different, but constant, rates. When candle P had burned 16 mm, candle Q had burned 10 mm. When candle P had burned y mm, candle Q had burned x mm. How is y related to x?