Perimeter=2(l+w)
36=2(l+w)
(l+w)=18
l=18-w
area of a rectangle=w*l
put value of l here
Area=w*(18-w)
Area=18w-w^2
I believe that B) m<3 would need to double. Since m<6 and m<3 are corresponding angles, they are always equal. So if 6 doubles, 3 needs to as well in order to be equal.
Answer:
so
slope is calculated this way:

let's calculate y init by:
3 = -3×2 + b
b = 9
so equation is:
y=-3x+9