Question

Let f(x) represent a function.

Answer 1

Answer:

Remember, if f(x) is a function, when you add a constant to the y-values, that is, if $C$ is a constant,  $f(x)+C$, moves the function f(x) up or down depending the sign of $C$.

And, you stretch or compress the function f(x) in the y-direction by multiplying the function by a constant, that is, cf(x), when c is a constant.

Then f(x)-4 is the function f(x) four units up in the direction of the axis y.

And 4f(x) is the function f(x) stretch by a factor of 4.