Answer:
A(1,1)
Step-by-step explanation:
the system is :
2x-y=1
x+2y=3
so :
y = 2x-1 .....the line color : red
y= (-1/2)x+3/2......the line color : blue
the pair solution is the intersection point for this line : A(1 ; 1)
A= 1/2Bh
A= 1/2 (10.2 x 8)
A= 1/2 (81.6)
A=81.6 / 2
A= 40.8
280