hi can some of u help me w dis one? its okay if u dont answer it just pls explain to me how to answer it. I am rlly struggling in my brother's module, im not rlly good at math lol

Answer:
hii I only know the answer on Activity 1 Number 1 hehe the answer is 'Given'.
I can't help you with the others but try to search its properties first and then based on that, write on the 'Reason' the proof of the statements. To prove those, search for theorems and postulates.