Given that f(x) and g(x) are inverses, which statements must be true? Check all that are correct. 1) The domain of f(x) is the range of g(x)

2)The graphs are symmetrical over the line y=x

3)g(f(x)) = x

4)The graphs are symmetrical over the x-axis

5)f(g(x)) = x

6)The point (1, 2) on f(x) becomes the point (-1, -2) on g(x)

7)The graphs are symmetrical over the y-axis