Transformations Coordinate Rules

Rotating 270 clockwise is the equivalent of rotating how many degrees counterclockwise?

• 90

• 270

• 180

• 360

Coordinate Rule:
Reflect around the y-axis

• (x,y) -> (-x, y)

• (x,y) -> (-y, -x)

• (x,y) -> (y,x)

• (x,y) -> (x, -y)

Coordinate Rule:
180 degree Rotation (counterclockwise)

• (x,y) -> (x, -y)

• (x,y) -> (-y,x)

• (x,y) -> (-x, -y)

• (x,y) -> (y,-x)

A function that takes points in a plane as an input and maps them to an output.

• Transfiguration

• Transformation

• Input Map

• Output Map

The original figure that a transformation is applied to.

• Postimage

• Starting Figure

• Preimage

• Transformed Figure

A rule for a pattern relating the coordinates of the preimage to that of its image.

• Coordinate Rule

• Coordinate Pattern

• Image Relation

• Mapping Rule

Translation Coordinate Rules

• (x,y) ->(y, x)

• (x,y) ->(x+h, y+k)

• (x,y) -> (-x, -y)

• (x, y) -> (-y, -x)

Coordinate Rule:
Reflect around the x-axis

• (x,y) -> (-x, y)

• (x,y) -> (-y, -x)

• (x,y) -> (y,x)

• (x,y) -> (x, -y)

Coordinate Rule:
Reflect around y=-x

• (x,y) -> (-x, y)

• (x,y) -> (-y, -x)

• (x,y) -> (y,x)

• (x,y) -> (x, -y)

Coordinate Rule:
90 degree Rotation (counterclockwise)

• (x,y) -> (x, -y)

• (x,y) -> (-y,x)

• (x,y) -> (-x, -y)

• (x,y) -> (y,-x)