Answer:
(3, -10)
Step-by-step explanation:
let A(x,y) and B(x1,y1)=(1,4)
by midpoint formula i.e. (x+x1)/2 ; (y+y1)/2
as midpoint is centre so,
(2, -3) = (x+1)/2 ; (y+4)/2
2=(x+1)/2 and -3=(y+4)/2
4-1=x and -6-4=y
x=3 and y=-10
therefore A(x,y)=A(3,-10)
