Constant of proportionality

Definition

The fixed number $k$ in a proportional relationship.

Used by AQA, Edexcel and OCR

Specification R8, R10, R13, R14 · Paper 1, Paper 2, Paper 3

The fixed multiplier $k$ in a relationship of the form $y=kx$ .
Revise: Ratios, Fractions, and Linear Functions

1
Do not replace $\propto$ with $=$ without introducing the constant of proportionality $k$ .

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The fixed number $k$ in a proportional relationship, such as $y=kx$ or $y=\frac{k}{x}$ .

The fixed multiplier k that turns a proportional relationship into an equation.

1 more note

The constant value connecting two proportional quantities; it is $k$ in $y=kx$ or $y=k/x$ .
Revise: Gradients as Rates

Specification R8, R10, R13, R14 · Paper 1, Paper 2, Paper 3

The fixed multiplier connecting two directly proportional quantities in an equation such as $y=kx$ .
Revise: Ratios and Linear Functions
The fixed number $k$ that links quantities in a proportional relationship.
Revise: Direct and Inverse Proportion
The fixed number $k$ that connects two proportional quantities in a proportionality equation.
Revise: Proportionality Equations

1 more note

Specification 5.02a, 5.02b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)

The fixed number $k$ in an equation such as $y=kx$ , equal to $y\div x$ for every matching pair of values.
Revise: Formal Linear Direct Proportion
The fixed number $k$ that converts a proportional statement into an equation, such as $y=kx^2$ .
Revise: Direct Proportion with Powers and Roots
The fixed number $k$ in a proportional relationship, such as $y=\frac{k}{x}$ .
Revise: Inverse Proportion