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