Two quantities x and y are in direct proportion when:

Question

Accepted Answer

A. x/y stays constant

1. Both rise or fall together in the same ratio.
2. The ratio x over y is a constant k.
3. So x equals k times y.
_Source: syllabus Mathematics, Chapter 13, Direct and Inverse Proportions._

Answer

x + y stays constant

Answer

x times y stays constant

Answer

x - y stays constant

Two quantities x and y are in direct proportion when:

Keep practising Ratio and Proportion