𝑥 is the input and 𝑓 is the function that we apply, which in this example is 3𝑥 – 1. An inverse function links the output value back to the input value, meaning it is the original ...

Recall that a function can be thought of as a machine which takes an input in (say x) and then depending on what that input is, it returns an output (say y ... the left to change the function used in ...