How can I express the flipped output of multiplication in function of original inputs?

1. When examining the formula of a function that is the result of multiple transformations How can you tell a horizontal stretch from a vertical stretch?
2. What is the inverse formula?

When examining the formula of a function that is the result of multiple transformations How can you tell a horizontal stretch from a vertical stretch?

When examining the formula of a function that is the result of multiple transformations, how can you tell a horizontal compression from a vertical compression? Answer: A horizontal compression results when a constant greater than 1 is multiplied by the input.

What is the inverse formula?

Inverse of a Function. Let f(x) and g(x) be two one-to-one functions. If (f∘g)(x)=x ( f ∘ g ) ( x ) = x and (g∘f)(x)=x ( g ∘ f ) ( x ) = x then we say that f(x) and g(x) are inverses of each other.