True or False 6. The inverse of the ordered pair (A, B) is (B, A) 7. f-(f(x)) = x for every x in the domain of f and f(f-(x)) = x for every x in the domain of f-. 8. The range of f equals the range of f-, and the range of f equals the domain of f-. 9. The graph of a function and its inverse are symmetric to the line f(x)=x. 10. A function has an inverse if and only if it is one-to-one