Pass maths · Graphs

Straight-line graphs

Learn the method, then complete five focused questions.

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LZ Method

In y = mx + c, m is the gradient and c is the y-intercept. Substitute x values, plot the points and join them with a straight line.

-5-5-4-4-3-3-2-2-1-11122334455xy
  1. 1y = 2x + 1
  2. 2x: −1, 0, 1, 2
  3. 3y: −1, 1, 3, 5
  4. 4Gradient = 2 · y-intercept = 1