What is function notation?
Function notation is a way of finding different values of a function, as an example:
f(x) = 5x-1
“f(x)” is actually just y but for function notation it has a special form.
This is a function on a graph.
In this function the pattern is:
f(x) = 5x-1
If you were to input a value into where the x next to the f is, it would cause you to find the y coordinate associated with the x coordinate you put into it.