Question

Which best describes the location of the line of reflection?
A. 2 units above point B
B. 4 units to the right of point B
C. 4 units to the left of point B
D. 4 units below point B

Answer 1

In a sense it is like looking into a mirror.
The triangle "looks" into the mirror and sees its reflection, appearing behind the mirror.
The triangle and its image are the same distance from the line of reflection. So if you drew in the line, what do you do to get from point B to the line?

Answer 2

I think it B I'm not 100% sure

Answer 3

is it 4 units to the right

Answer 4

im not 100% sure

Answer 5

because i counted and i got 4

Answer 6

Sounds good to me!
Starting from point B, you would go four units to the right to get to the point between B and B' (its reflection).