f(x-3.5) —————>f(x) is translated 3.5 units right
Remember, the -3.5 is affecting the x-coordinate because it is in the parenthesis with it, and translations are opposite. So, -3.5 is actually a translation to the right of +3.5.
3.5f(x)————>f(x) is vertically stretched by a factor of 3.5
The 3.5 is multiplying the entire function, meaning all y-values will be 3.5 times enlarged.