MathsYears 7–9Algebra

Coordinates and linear graphs

Plot coordinates in all four quadrants; draw and interpret linear graphs (y = mx + c)

What you'll learn

  1. 1

    Imagine a treasure map 🗺️. You need two numbers to find the treasure — one tells you how far across, the other how far up!

  2. 2

    In the pair (5, 2), which number tells you how far ACROSS to go?

  3. 3

    Drag the pirate flag 🏴‍☠️ to the coordinates (4, 3) on the treasure map.

  4. 4

    Let's plot (2, 5) together step by step.

  5. 5

    If you start at (0, 0), go 3 across then 4 up — what are your coordinates?

  6. 6

    Plot the point (5, 2) on the grid.

  7. 7

    What is the y-coordinate (the up number) in (1, 7)?

Practise Coordinates and linear graphs with Whizlo

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