GCSE Maths (AQA)

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Area Under a Graph

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Algebra Graphs

Area Under a Graph

3:21 Areas Under Graphs
Spec A15
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  • The area between a graph and the x axis represents the result of multiplying a range of x values by their changing y values
  • To work out the area under a non-linear graph, two vertical lines need to be drawn to represent the start and end of the area
  • The area under a non-linear graph is more complicated to calculate than a horizontal line, as the y values are constantly changing
  • Finding the area under the graph is necessary when multiplying a constant by a changing variable
  • The units of the area are the units of the y axis multiplied by the units of the x axis
  • The units of the area represent some kind of cost or value

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