Direct and Inverse Proportion (AQA GCSE Maths): Quizzes

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Direct and inverse proportion
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In direct proportion, what happens to one quantity if the other doubles?

It also doubles

What is the golden rule for solving direct proportion problems?

DIVIDE for ONE, then TIMES for ALL

In inverse proportion, what happens to one quantity if the other doubles?

It halves

What is the rule for solving inverse proportion problems?

TIMES for ONE, then DIVIDE for ALL

What does the symbol ∝\propto mean?

Is proportional to

If y∝xy \propto x, what equation does this become?

y=kxy = kx

If y∝1xy \propto \frac{1}{x}, what equation does this become?

y=kxy = \frac{k}{x}

If y∝x2y \propto x^2, what equation does this become?

y=kx2y = kx^2

What does the constant kk represent in proportional relationships?

A value that stays the same

What is the first step when solving algebraic proportion problems?

Write proportionality & replace ∝\propto with =k= k

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Direct and Inverse Proportion

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Compound Growth and Decay

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Speed, Density and Pressure

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Direct and Inverse Proportion

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Compound Growth and Decay

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Speed, Density and Pressure

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Direct and Inverse Proportion

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Speed, Density and Pressure

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Direct and Inverse Proportion

Percentages

Compound Growth and Decay

Unit Conversions

Speed, Density and Pressure

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