Solve the system
x^2+(y-3)^2-9=0
x+y-1=0
Substitute 1-x for y in the first equation.
x^2 + (x+2)^2 = 9
4x + 4 = 9
Take it from there
x^2+(y-3)^2-9=0
x+y-1=0
Substitute 1-x for y in the first equation.
x^2 + (x+2)^2 = 9
4x + 4 = 9
Take it from there