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Coordinate Rule
See It in Action
Two examples of the idea done right—and one common look-alike that is not right.
EXAMPLE
EXAMPLE
NON-EXAMPLE
Definition
A coordinate rule is a set of instructions that describes how to transform points on the coordinate plane.
Key Points:
It shows how to move each point (x, y) to a new location (x', y').
The rule is often written as an ordered pair transformation, like:
Translation: (x, y) → (x + a, y + b)
Reflection: (x, y) → (-x, y), etc.
Rotation: (x, y) → (-y, x), etc.
Example:
A translation rule (x, y) → (x + 2, y - 3) means move every point 2 units right and 3 units down.
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