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|[[File:DirectlyProportionalSketchGraph.png|center|200px]]
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| style="height:20px; width:200px; text-align:center;" |This [[Scatter Graph|scatter graph]] shows a [[linear]] relationship that is [[proportional]] where x increases, and y increases.
<math>y = mx + c</math>
Where m, the [[gradient]], is positive.
| style="height:20px; width:200px; text-align:center;" |This [[Scatter Graph|scatter graph]] shows a [[linear]] relationship that is [[proportional]] where x increases, and y decreases.
<math>y = mx + c</math>