A dilation with center (0,0) and scale factor "k" is applied to a polygon. What dilation can you apply to the image to return it to the original preimage?

Question

asked Dec 10, 2016 234k views

1 Answer

Luke Forder · Answer 1 · 2016-12-15T00:00:17+0000

So when we scale up this image, all points' distances from the center are multiplied by

. We want to then put them back to where they were before.

Thinking about inverse operations, we could just divide by

as
$\frac{k}1$ , then the opposite reciprocal would be
$\boxed{\frac{1}k}$