F(x)=3x+3
F(3x)-2 this means to change all x's in f(x) with 3x and the -2 means subtract 2 from the answer
F(x)=3x+3
F(3x)=3(3x)+3
= 9x+3
then -2
= 9x+ 3 -2
= 9x + 1
the linear transformation is that it went from 3x to 9x or 3 times steeper
and it went from + 2 to + 1 or it moved down vertically by 2