Answer:
Check below
Explanation:
That's too bad you haven't attached a rectangle.
Here's an example, with the data you've typed in.
1) When we dilate a rectangle we either grows it or shrink it through a scale factor.
Check the first picture below.
The New Dilated Rectangle A'B'C'D' will follow its coordinates, when the Center of Dilation is at its origin(Middle):
2) But In this question, B is the center of Dilation. So, Since B is the Dilation Point B=B' . And More importantly:
3) So check the pictures below for a better understanding.