Please help I need to find the scale factor for the side lengths!!!

Answer:
The blue thing is 4 times smaller than the big thing.
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
The image/preimage scale factor can be found by considering the lengths of corresponding sides.
Q'R'/QR = (4-2)/(16 -8) = 2/8 = 1/4
The scale factor is 1/4.