Step-by-step explanation:
solved above 8n the diagrammm
We have to use Pythagorean theorem that says :

The missing length of the triangle is : 36 feet
Centralangle/360 times area of circle=sector area
120/360 times pi8²=
(1/3)(64pi)=64pi/3 square inches
M = -2 and b = 3
so equation
y = -2x + 3
hope it helps