Proportion equations · Year 10

In Year 10 you learn: direct proportion equations.

When two quantities are in proportion, you can write a formula linking them, find the constant k from one pair of values, and then use the formula for any other value. Many science laws — springs, gravity, light — are proportion formulas.

Key facts

• Method: write the formula with k. Put in the pair you know to find k. Then use the formula.

Other years

• Proportion equations · Year 11
• Proportion equations · Year 12