7.3.1

Coordinates

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Coordinates

Co-ordinates are used to plot the position of points on a graph.

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Axes

  • On the graph above, there is:
  • A horizontal line called the x-axis.
  • A vertical line called the y-axis.
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Origin

  • The axes are numbered to tell you how far along or how far up the axis a point is.
    • How far along the x-axis a point is is called the x-coordinate.
    • How far up the y-axis a point is is called the y-coordinate.
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Coordinates

  • We give the location of a point in coordinates (x,y).
    • x is the x-coordinate of the point.
    • y is the y-coordinate of the point.
  • The x-coordinate is always given before the y-coordinate.
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Points

  • The point on the grid has coordinates (2,1).
    • This means the point is 2 along, and 1 up.
  • The axes meet at a point called the origin which is at (0,0).

Jump to other topics

1Year 3 - Number

2Year 3 - Measurement

3Year 3 - Geometry

4Year 3 - Statistics

5Year 4 - Number

6Year 4 - Measurement

7Year 4 - Geometry

8Year 4 - Statistics

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