sqrt((x+3)^2+(y-1)^2)=|x-y+3|
=>(x+3)^2+(y-1)^2=(x-y+3)²
=>(x+3)²+(y-1)²=(x+3)²-2(x+3)y+y²
=>y²-2y+1=x²+6x+9-2xy-6y+y²
=>y=(x²+6x+8)/(2x-4)
sqrt((x+3)^2+(y-1)^2)=|x-y+3|
=>(x+3)^2+(y-1)^2=(x-y+3)²
=>(x+3)²+(y-1)²=(x+3)²-2(x+3)y+y²
=>y²-2y+1=x²+6x+9-2xy-6y+y²
=>y=(x²+6x+8)/(2x-4)