Question

If the center of dilation is at the origin, by what scale factor was octagon ABCDEFGH dilated?

Answer 1

C is the answer for this one

Answer 2

C. 4

Look at where segment A'B' intersects, at x = 8.

Look at where segment AB intersects, at x = 2.

AB is smaller then A'B' that means the scale factor is

$A'B'/AB=\frac{8}{2}=4$.

Hope this helps.