Direct variation: finding unknowns

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Other lessons in this sub-strand

1. Quantities that vary together
2. Direct variation and the constant
3. Direct variation from a table
4. Direct variation: finding unknowns
5. Direct variation with a power
6. Graphs of direct variation
7. Wages and hours worked
8. The cost of similar items
9. Fuel and distance
10. Mass and length of a rod
11. Inverse variation and the constant
12. Inverse variation from a table
13. Inverse variation: finding unknowns
14. Inverse variation with a power
15. Graphs of inverse variation
16. Workers and time
17. Speed and time for a journey
18. Pressure and volume of a gas
19. Joint variation
20. Volume of a cylinder
21. Combined variation
22. Combined variation: a worked example
23. Comparing graphs of variation
24. Current, voltage and resistance
25. Variations around us
26. Variations: mixed review