Question 1086157
.
<U>HINT</U>:  It is clear from the condition that the center lies on the line x = 0 (y-axis), which bisects the segment from (-1,0) to (1,0).


So, the equation to find the center (0,y) is the equality of distances from (0,y) to (3,1) and (1,0).


It will give you the quadratic / or even linear/ equation for "y".


Solve it and find the center in this way.