Answer:
- D'(-1, 1)
- E'(-4, 8)
- F'(-8, 8)
Step-by-step explanation:
The coordinates of the given vertices are ...
Reflection across the y-axis changes the sign of the x-coordinate:
(x, y) ⇒ (-x, y) . . . . . . reflection across the y-axis
This means the reflected figure has coordinates ...
D(1, 1) ⇒ D'(-1, 1)
E(4, 8) ⇒ E'(-4, 8)
F(8, 8) ⇒ F'(-8, 8)
