HELP?

f = (1, 2), (2, 3), (3, 4), (4, 5),
g = (1, -2), (3, -3), (5, -5), and
h = (1, 0), (2, 1), (3, 2),

Find the following and state the domain?!

2a.f+g

2b.f-g

2c. f*g

2d. f/h

2e. G o F o h

HELP Pleasee!!
I'm Clueless :/