A set of values that show an exact position.
On graphs it is usually a pair of numbers: the first number shows the distance along, and the second number shows the distance up or down.
Example: the point (12,5) is 12 units along, and 5 units up.
There are other types of coordinates:
• map coordinates (North/South, East/West)
• polar coordinates (distance, angle)
• 3-dimensional coordinates
• etc