Not really sure how to do this, can someone help ?

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

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

answer: i think it is (1,-2)