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| − | ==Key Stage 4==
| + | #Redirect [[Linear Graph]] |
| − | ===Meaning===
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| − | '''Linear''' refers to a straight line.
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| − | ===About Linearity===
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| − | : A [[Scatter Graph|scatter graph]] with a straight [[Line of Best Fit|line of best fit]] is referred to as a [[linear]] graph.
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| − | : A '''linear''' graph has a constant [[gradient]].
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| − | ===Examples===
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| − | {| class="wikitable"
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| − | |-
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| − | |[[File:ProportionalSketchGraph1.png|center|200px]]
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| − | |[[File:ProportionalSketchGraph2.png|center|200px]]
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| − | |[[File:DirectlyProportionalSketchGraph.png|center|200px]]
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| − | |-
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| − | | style="height:20px; width:200px; text-align:center;" |This [[Scatter Graph|scatter graph]] shows a [[linear]] relationship where x increases and y increases.
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| − | | |
| − | <math>y = mx + c</math>
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| − | | |
| − | Where m, the [[gradient]], is positive.
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| − | | style="height:20px; width:200px; text-align:center;" |This [[Scatter Graph|scatter graph]] shows a [[linear]] relationship where x increases and y decreases.
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| − | | |
| − | <math>y = mx + c</math>
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| − | | |
| − | Where m, the [[gradient]], is negative.
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| − | | style="height:20px; width:200px; text-align:center;" |This [[Scatter Graph|scatter graph]] shows a [[linear]] relationship that is [[Directly Proportional|directly proportional]] where x doubles, y doubles.
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| − | | |
| − | <math>y = mx</math>
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| − | | |
| − | Where m, the [[gradient]], is positive.
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| − | |}
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