1. Warm up 1.A function is even. Point A(-3, 4) is on the even function. Name another point. 2.A function is even. Point B(9, 2) is on the even function. Name another point. 3.Reflect C(-5, -3) over the y-axis. 4.Reflect D(2, -4) over the x-axis. 5.Reflect E(-12, 4) over y = -x. (3, 4) (-9, 2) C’(5, -3) D’(2, 4) E’(-4, 12)

3. Review Homework

4. Math is brought to you by the number … April 4, 2013 Day 60 of 90 90-60 =

6. Interactive Notebook P 35 MCC912.A.REI.5 Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.

7. Interactive Notebook P 37 MCC912.A.REI.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables.

8. EOCT

12. Rotations A turn around a center. The distance from the center to any point on the shape stays the same.

13. Rotate 90  Clockwise about the Origin (Same as 270  Counterclockwise) Change the sign of x and switch the order

14. Rotate 90° clockwise about the origin

16. Rotate 90  Counterclockwise about the Origin (Same as 270  Clockwise) Change the sign of y and switch the order

17. Rotate 90° counterclockwise about the origin

19. Rotate 180  about the Origin ONLY Change the signs

20. Rotate 180° about the origin

22. Any figure that can be turned or rotated less than 360° about a fixed point so that the figure looks exactly as it does in its original position. Rotational Symmetry

23. Which figures have rotational symmetry? For those that do, describe the rotation that map the figure onto itself. Regular pentagon Isosceles triangle Rhombus

24. Classwork Rotations Practice Worksheet

25. Homework Rotations HW Worksheet