What is the key distinction between the actual path of reflected light and the construction lines used to locate a plane-mirror image?

The reflected rays travel in front of the mirror, while the backward extensions behind the mirror are geometric constructions used to show apparent origin

The construction lines represent refracted rays inside the mirror coating

Both the reflected rays and the construction lines carry energy behind the mirror to form the image

The reflected rays stop at the mirror, and only the construction lines continue to the eye