# Maths

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What is the equation for pythagoras?
A2 + B2=C2
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What is an simultaneous equation?
Finding 2 unknown values by solving 2 equations at the same time.
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What do you have to do in 'changing the subject of a formula'?
Rearranging a formula to find the value of a subject.
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What is direct proportion?
When two quantities are in direct proportion, as on inreases, the other increases by the same percentage.
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What does ' Trial and Improvement' involve?
This involves substituting the unknown with different values, until we find one that works.
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What is formulae?
A method or procedure for acheiving something.
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## Other cards in this set

### Card 2

#### Front

What is an simultaneous equation?

#### Back

Finding 2 unknown values by solving 2 equations at the same time.

### Card 3

#### Front

What do you have to do in 'changing the subject of a formula'?

### Card 4

#### Front

What is direct proportion?

### Card 5

#### Front

What does ' Trial and Improvement' involve?