Answer:
Move your first dot at -7, -2. Move the next one at 6, -2
Step-by-step explanation:
That is your line of reflection.
I cant do a super long explanation but in simple words to find the line of reflection for me at least all i did was look at one of the points and decide how i could reflect that across a line so it maps onto eachother. Tak b and b' for example:
At point b i saw that is i put a line in between b and b' that that was the one and only way to reflect b. Therefore i tested it with the other points and it worked.
Hope this helped you
