Hello,
y=-k(x+2)(x-1/2)(x-3) where k is a real positive.
We may chose k=1
There are an infinite solutions.
Let's go shape by shape!
The area of a rectangle can be calculated as follows:

where L = length and W = width
The area of a trapezoid can be calculated as follows:
where b1 and b2 = lengths of the base and H = height of the shape
The area of a parallelogram can be calculated as follows:

where B = length of the base and H = height of the shape
Answer:
The slope is -3/4
Step-by-step explanation:
To find slope:
y1 - y2 / x1 - x2
(2,5) and (-2,8)
8 - 5 / -2 - 2
3/-4
You have a bunch of interesting figures there (check the diagram):
- square (in red)
- parallelogram (in green)
- Isosceles trapezoid (in yellow)
- Isosceles triangles (blue, and purple)
Notice that you have more than one of the same figures: a bunch of small isosceles triangles, tow isosceles trapezoids, two big isosceles triangles... etc.