1. Bell Ringer: List the domain and range of the relation below.

2. (PSSA) TRANSFORMATIONS LEQ: How do you translate objects on a coordinate plane?

3. Rotations Picture: Definition: A transformation in which a figure is turned about a fixed point, called the “center of rotation.” The size or shape is not changed.

4. Rotations Some rotations are turned about a vertex: EX) Rotate 180 degrees about C A B C

5. Rotations Some rotations are turned about a vertex: EX) Rotate 90 degrees clockwise about C A B C

6. Rotations Some rotations are turned about the origin: EX) Rotate 180 degrees about the origin A B C (x, y) -> (-x, -y)

7. Rotations Some rotations are turned about the origin: EX) Rotate 90 degrees about the origin A B C (x, y) -> (y, -x)

8. Rotations Some rotations are turned about the origin: EX) Rotate 270 degrees about the origin A B C (x, y) -> (-y, x)

9. Rotations Stations

10. One More: Dilations A transformation that enlarges or reduces a figure by a scale factor relative to a center point. The center point is called the center of dilation.

11. Enlargement or Reduction? Scale Factor = 3 Scale Factor = 1/5 Scale Factor = 1 ENLARGEMENT REDUCTION NEITHER

12. Dilations Class Practice

13. Dilations Team Huddle

14. Quiz Tomorrow! Translations (slides) Reflections (flip) Rotations (turn) Dilations (resize)