The value of z is 8.
The two polygons are similar. Every length value for the polygon on the right is 2 units smaller than on the left. So, FG is 6, whereas BC is 8. Z is 8, whereas on the left is was 10. etc.
Very simple. divide 3952 by 4, because the larger fish is 3 times the amount of the small fish, so there are 4 groups. Multiply it by 3 for the larger fish and keep it for the small fish. Then, divide the products by 13 because the quotient is the amount of money each fish costs. There you have your answer!
I think you meant the two <em>segments</em><em> </em>are identical, if so then:

Answer:
y=-2
Step-by-step explanation:
y-y1=m(x-x1)
m=(y2-y1)/(x2-x1)
m=(0-(-2))/(-5-(-5))
m=(0+2)/(-5+5)
m=2/0
y-(-2)=0
y+2=0
y=0-2
y=-2