# Thread: Dilating the truncus

1. ## Dilating the truncus

Simple question. Say I have 1/x^2, and I were to dilate it 'from the y-axis' by a factor of 2 units.
Do I get 1/2x^2?

2. Originally Posted by Naur
Simple question. Say I have 1/x^2, and I were to dilate it 'from the y-axis' by a factor of 2 units.
Do I get 1/2x^2?
Sketch the two graphs, does that look right?

3. I'd say yes. But these 'from y-axis/parallel to y-axis' terms always confuse me.

4. Originally Posted by Naur
I'd say yes. But these 'from y-axis/parallel to y-axis' terms always confuse me.
You want something which is twice as far away from the y at every point.

5. Oh well that makes it pretty easy doesn't it. So the correct answer would be 2/x^2. Thanks very much

6. Are you sure?