I've tried getting the x coordinate for the center by completing the square "(x-3/2)^2" so the center for all the conics from the equation is (1.5,y), this makes sense with the graph on desmos so i assume this is correct.
the locus for the equation is the set of all points that satisfy a condition (the condition being that all the points are the center of the set of conics from (k+1)x^2+ky^2+2kxy-3x+2-k=0 )
now i don't know if the x coordinate that i found is correct or how to find the y coordinate, i assume it has something to do with the "xy" term but i don't know how to tackle it