1. REVIEW OF MAPPING RULES
LESSON 31

2. MAPPING RULES
We often use a coordinate grid when we work with transformations. We use a mapping rule to describe how points and their images are related.
A mapping rule tells you what to do to the coordinates of any point on the figure to determine the coordinates of tits image.
Example of Mapping rule:
(x, y) (x + 5, y - 2)
It tells you to add 5 to the x-coordinate and to subtract 2 from the y-coordinate.

3. MAPPING RULES FOR TRANSLATIONS
The transformation (x,y) (x + h, y + k) represents a translation for all values of h and k.
YOU NEED TO MEMORIZE THE MAPPING RULES!!!!

4. MAPPING RULES FOR REFLECTIONS
Reflections in the
Reflections in the line
YOU NEED TO MEMORIZE THESE RULES!!!

5. MAPPING RULES FOR ROTATIONS
The mapping rules for rotations depend on the position of the rotation centre, the angle of rotation, and the direction of rotation.
For Clockwise rotations: 90o clockwise = 270o counterclockwise
180o clockwise = 180o counterclockwise
270o clockwise = 90 counterclockwise

6. Class Work
Make sure you have a copy of the mapping rules to memorize from Lesson 31
Complete Lesson 31 worksheet