Geometry  Transformations and Dilations
posted by Knights .
When a square of area 4 is dilated by a scale factor of k, we obtain a square of area 9. Find the sum of all possible values of k.
I do not understand...it is not 3/2, as I was told, but I don't understand why? Help?

4*k = 9
k = 9/4
(9/4) * 4 = 9.