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Plotting points, step by step

An ordered pair is an address on a grid: go across, then up.

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The question

A(2, 4)

Point A

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  1. Start at the corner where the two lines meet — that is (0, 0), and every reading begins there.
  2. Along the bottom FIRST: count 2 across. Always this one before the other, because until you have gone along you do not know which line to go up.
  3. Then up: count 4. Now the two numbers have been used in the order they are written.
  4. So point A is (2, 4) — 2 across, then 4 up. (4, 2) would be a different point altogether.

How it works.

  1. 01

    Start at the corner where the two lines meet — that is (0, 0), and every reading begins there.

  2. 02

    Along the bottom FIRST: count 2 across. Always this one before the other, because until you have gone along you do not know which line to go up.

  3. 03

    Then up: count 4. Now the two numbers have been used in the order they are written.

  4. 04

    So point A is (2, 4) — 2 across, then 4 up. (4, 2) would be a different point altogether.

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