# Math Help - transformations, dilations help

1. ## transformations, dilations help

http://www.clayton.k12.mo.us/4037206...997/CH_1_6.pdf

i know that #1 is a horizontal dilation but i dont know how to count how many its by or how to set up an equation for it

2. Originally Posted by kdeighan
So for instance, if the original function were $x^3 - 3x$, then the new function is something like $(x/2)^3 - 3(x/2)$, which is a scaling by a factor of 2.
Something similar happens if you do it to a trigonometric function - just graph $sin(x)$ versus $sin(2x)$.