# Thread: horizontal compressions on reciprocal functions

1. ## horizontal compressions on reciprocal functions

if you have the function y=1/x
how do you rewrite the equation with a horizontal compression of 1/2 ?
i know that b=2, but where do i put it?

2. To "compress" a function horizontally by 1/2 just multiply the function by 1/2:
y= (1/2)(1/x)= 1/(2x)

3. Originally Posted by monstamash
if you have the function y=1/x
how do you rewrite the equation with a horizontal compression of 1/2 ?
i know that b=2, but where do i put it?
The "b" you are looking for is always the coefficient of x. However, using a logical method like HOI pointed out is, at least in my opinion, more logical and easier to think through.