Direct Proportion¶
Direct Proportion is where two values increase at the same rate.
\[
y = kx
\]
Where:
- k is the constant of proportionality
Example¶
The National Living Wage (in 2017) is £7.50 1
Ronald gets paid the National Living Wage, and works 5 days a week working 5 hours a day. How much does Ronald get paid in a week?
\[
\begin{align}
y & = kx \\
& = 7.50 * (5* 5) \\
& = 7.50 * 25 \\
& = £187.50
\end{align}
\]
-
https://www.gov.uk/national-minimum-wage-rates ↩
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