Skip to content
Toggle Sidebar
Home
Subjects
Past Papers
Key Terms
Settings
My Courses
Select your courses
Mathematics
Ratio, Proportion and Rates Of Change
Proportionality
Direct Proportion
Direct Proportion
What You Need to Know
Solve simple problems involving direct proportion, including algebraic proportions, ratio equality, and currency conversion.
Solve formal direct proportion problems where
y
∝
x
y \propto x
y
∝
x
.
Recognise that
y
=
k
x
y = kx
y
=
k
x
implies
y
y
y
is proportional to
x
x
x
.
Formulate and solve equations involving a quantity directly proportional to a power or root of another quantity.
Revision Notes
Sign up to access these revision notes
Create an account to unlock revision notes, key terms, and exam tips.
Sign up
Log in
Practise with Past Papers
Key Terms & Definitions
Previous Topic: Ratio Calculations
Ratio Problems
Next Subtopic
Inverse Proportion
