PLEASE HELP WILL GIVE BRANILIEST does the following relation form a function if so how do you know

the relation is : (1,3) (5,6), (4, 3), and (2, 5)

Patty made a name tag in the shape of a parallelogram. reilly made a rectangular name tag with the same base and height. explain how the areas of the name tags compare.

Answer! if you don’t mind, can you explain

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.