Warm Up
Complete the reflections.
1. Reflection across y = 3.
2. Reflection across y = x.
C
C
A
A
T
T
Rules of Reflection
Objective: Use the reflection rules to reflect images on the coordinate plane.
Reflection across the x­axis.
A
D
C
Reflection across the y­axis.
X
Y
Z
Reflection across the line y = x.
J
K
M
L
Reflection across the line y = ­ x.
A
C
D
B
Reflections
x‐axis (x, y ) → (x, ‐ y) _____________________________
y‐axis (x, y ) → (‐ x, y) _____________________________
y = x (x, y ) → (y, x ) ______________________________
y = ‐ x (x, y ) → (‐ y, ‐ x) ______________________________
Find the image of each point over each line of reflection.
Line of Reflection
x­axis
( 5, 3)
(7, 2 )
(­3, 5)
(0, ­ 4)
(6, ­ 6)
(­4, ­8)
(­1, 9)
y­axis
y = x
y = ­ x
HW # 34 Reflection Rules Worksheet