Typically when a polygon has more sides, the angles get smaller.
Shaded part means the yellow part
- The two sets are S and Y.
- The centre intersection part is A

- All the areas occupied by both sets is AUB .
Rest part :-

Answer:
f(- 4) = 12
Step-by-step explanation:
To evaluate f(- 4) substitute x = - 4 into f(x) , that is
f(- 4) = - 8 - 5(- 4) = - 8 + 20 = 12
The formula is x1+x2 divided by 2 and y1+y2 divided by 2.I hope this is what you where looking for