Question

Let f(x) =3x and g(x)=4x Find its function and its domain.

3x/4x = 3/4x

(- infintity, infinity)

is this correct?

Answer 1

You don't say what you are trying to calculate. Is it f{g(x)} ?
That would be 3*(4x) = 12 x

f(x)/g(x) would be 3/4

You statement 3x/4x = 3/4x is not correct in any case.

Answer 2

its f(x)/g(x) so its 3/4

so would the domain still be

(- infinity, infinity)?

Answer 3

No. The only possible answer is 3/4 in that case

Answer 4

Thanks.