Identify the constraints on the system other than
x>0 and y 20.
D
x + y 2 80
0 0.4x + 0.5y? 100
6x + 4y = 720
2x + 4y = 400
0 6x + 2y2 720
4x + 4y 2 400
DONE

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source: