Question

Why use f(x) instead of y?

Answer 1

Answer:

The notation "f(x)" is exactly the same thing as "y"

Step-by-step explanation:

The effect of using f(x) instead of y is that it allows us to talk about f.

If we have an equation relating X to Y then that's a relationship between rwo nimbers.

For example if you have that y=

$y = {x}^{3}$

...then that means that X and Y are some numbers obeying that equation