I need help ASAP,, pleaseeee

Answer:
1a) (-7,-3)
1b) (7,3)
1c) (3,-7)
3) 2 (180)
4) sorry I can't figure this one out
5) If it says 180° about the origin then it is (-5,10) if it isn't about the origin the say what it is in the comments and I will try to look at it again
Step-by-step explanation: