Real-Life Graphs (AQA GCSE Maths): Flashcards

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Real-life graphs
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Two parts of billing structure

Fixed charge + cost per unit

Fixed charge in billing

Basic amount paid regardless of usage

Shape of billing graph sections

Horizontal (flat) then sloped

What does the gradient represent in billing graphs?

Cost per additional unit

Formula for gradient

vertical changehorizontal change\frac{\text{vertical change}}{\text{horizontal change}}

What steeper slopes indicate

Faster changes

Graph slope for narrow container sections

Steep slope (height drops quickly)

Graph slope for wide container sections

Gentle slope (height drops slowly)

Graph type from cylindrical containers

Linear graph

How container width affects drainage

Narrow=steep slope, wide=gentle slope

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