Answer: SF = -3
Step-by-step explanation:
Looking at the figure and its image, three things are immediately obvious.....
The image is bigger
The image is inverted.
The figure and the image have a common point.
The common point is the center of dilation. (-4, -4)
The fact that it lies BETWEEN the image and the figure means that the SF is a negative number.
This accounts for the fact that the image is inverted.
To find the Scale Factor divide

Looking at the horizontal lines we see..
= -
= -3