Question

When A’B’C’ is reflected across the line x= -2 to from A”B”C”, vertex ___ of A”B”C” will have the same coordinates as B’

Answer 1

Answer: B''

This is because point B' has x coordinate x = -2. This point is directly on the mirroring line, so it doesn't move when the reflection is applied.

We can write B' = B''