More Transformation Stuff (Edexcel GCSE Maths): Quizzes

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12 questions from this quiz

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What can multiple transformations often be replaced by?

A single equivalent transformation

Reflecting across the x-axis then y-axis equals what single transformation?

Rotation of 180° about the origin

When finding the equivalent single transformation, what should you ignore?

The intermediate shape

What should you compare to find an equivalent single transformation?

Original and final positions

For scale factor nn, how do lengths change?

Lengths become nn times bigger

For scale factor nn, how do areas change?

Areas become n2n^2 times bigger

For scale factor nn, how do volumes change?

Volumes become n3n^3 times bigger

Why do areas scale by n2n^2 for scale factor nn?

Area involves 2 dimensions

How do you find scale factor from areas?

new areaold area\sqrt{\frac{\text{new area}}{\text{old area}}}

How do you find scale factor from volumes?

new volold vol3\sqrt[3]{\frac{\text{new vol}}{\text{old vol}}}

If scale factor is 3, volumes are how many times larger?

27 times larger

What formula gives scale factor from lengths?

n=new lengthold lengthn = \frac{\text{new length}}{\text{old length}}

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