Geometry 4.1-4.3 Review

Front

What is the rule for transforming a point (x, y) to (y, -x)?

Back

This transformation swaps the x and y coordinates and changes the sign of the new x coordinate.

Front

What are the coordinates of the image of point (-5, 6) after applying the transformation (x, y) → (y, -x)?

Back

(6, -5)

Front

What is the result of applying the transformation (x, y) → (x + 2, y - 1) to the point J(1, -2)?

Back

J'(3, -3)

Front

What is the reflection of point (x, y) across the y-axis?

Back

The reflection is (-x, y).

Front

What is the reflection of point (x, y) across the x-axis?

Back

The reflection is (x, -y).

Front

What is the notation for reflecting a shape across the y-axis followed by translating it down 4 units?

Back

R_y-axis then (x, y - 4).

Front

What is the transformation that moves a shape without changing its orientation?

Back

Translation.

Front

What is the transformation that flips a shape over a line?

Back

Reflection.

Front

What is the transformation that rotates a shape around a point?

Back

Rotation.

Front

What are the coordinates of the vertices of triangle JRB after the transformation (x, y) → (x + 2, y - 1) followed by reflection across the y-axis?

Back

(-3, -3), (1, 5), (-6, 4).