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Plotting Straight Line Graphs using Intercept Method Math Review

math tutorials > plotting straight line graphs using intercept method tutorial

 

To plot a straight line you need only 2 points

The x-intercept is the point where the graph cuts the x-axis (x,0).  The y-intercept is the point where the graph cuts the y-axis (0,y).

 

Graph intercepts

 

  1. To calculate the y-intercept, put x = 0.
  2. To calculate the x-intercept, put y = 0.
  3. Plot the 2 intercepts and join them with a straight line.

Example

Finding intercepts


Finding intercepts

 

 

Graph intercept problems for you to try

1)  x + y = 7

2)  y = -x + 2

3)  2y + 3x = 6

 

Graph paper