Attach file, Can some one check my answer Please!

Question

salina · Answer

attachment

anonymous · Answer

Neither exists. f(g(2)) does not exist, and g(f(-4)) does not exist.

salina · Answer

What is oder pair?

anonymous · Answer

An ordered pair is made up of two numbers that are related in some way.  For example, every time you graph something and make a T-chart, you are getting ordered pairs.
Examples:  (1, 4), (2, -4), etc.

anonymous · Answer

can you write oder pair 
fog= {(,),(,)}?
and 
gof={(,),(,)} ?

anonymous · Answer

Yes, you can write it like that.

anonymous · Answer

my answer is correct?

anonymous · Answer

Yes, that would be a valid way to express an answer.

anonymous · Answer

fog = {(5,1),(8,9),(2,4),}
fog = {(5,4),(8,9),(2,1),}
2 way can exist or only one exsit?

anonymous · Answer

$$(f \circ g)(2)=f(g(2))=f(-2)$$
There is no -2 in the domain of f, so 
$$f \circ g$$does not exist

anonymous · Answer

fog= none?

anonymous · Answer

Yes.  Same with gof