The graph doesn't even show the points of interest.
The average rate of change on that interval is 14.
Side A’B’ and D’C’ are related because they are both parallel which I think means that they would be the same length
I would say smaller than because you would be dilating the image by a number less than 1, which is making the image smaller.
The distance around an object is called the perimeter. To get the perimeter, you add up the sides. So, 2/18 + 3/12 + 2/12 = your answer.