ab has endpoints at (2,3) and (2,5). after a dilation with a center at the origin and a scale factor of 15 , what would be the length of the image of ab ?

Question

1/5 units
2/5 units
2 units
10 units

Answer 1

both points are on the vertical line x=2, so they are just 2 units apart
so multiply all coordinates (and thus distances) by 15
I suspect a typo, since the result is not one of the choices.

Answer 2

Well, which one would be the closest? 10?

Answer 3

need an answer asap

Answer 4

Yes, 10 units would be the closest choice, although the correct answer should be 30 units.