GCSE Maths (Edexcel)

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Plotting Straight Line Graphs

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Algebra Graphs

Plotting Straight Line Graphs

6:36 Straight Line Graphs
Spec A9 A12 A18
Previous Calculating Equations of Straight Lines Next Real Life Uses of Linear Graphs
  • Straight line graphs can be plotted using a table of values
  • The equation y = mx + c represents a straight line with a gradient of m and a y intercept of c
  • To plot the equation, create a table of values with x values and corresponding y values
  • Use at least three points to plot the graph, but it's best to use more for accuracy
  • Make sure the line extends across the whole width of the graph
  • Label the axis as X and Y and draw arrows on the ends
  • To plot the graph without writing out the points, start at the y intercept and move according to the gradient (1 along, 1 up) to get a series of points for the line

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