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Measurement
Plotting Ordered Number Pairs on a Coordinate Grid
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> Plotting Ordered Number Pairs < you are here
An ordered pair is a pair of numbers use to name
points on coordinate grid. The two numbers are
called the 'coordinates' of the point.

The first coordinate is the horizontal called the 'x'
coordinate.
The second is the vertical is called the 'y'
coordinate.

The point (0,0) is called the 'origin'
In the diagram above, the point (4, 2) meet at the
intersection of the two lines marked with a red dot.
The coordinates of this point are 4 and 2.
Example: Locate the point: (4,2) on graph grid
below.
1: Locate 4 on the horozontal
axes.

2: Locate 2 on the vertical axes
Note: The order pair (4,2) above does not name the
same point as the ordered pair (2,4) below.