If A and B are two fixed points and P is a variable point such that ` PA + PB = 4`, the locus of P is

A(2, 1) and B(1, 2) are two points. If P is a point such that PA : PB = 2:1 , then the locus of P is

A(-9, 0) and B(-1, 0) are two points. If P(x, y) is a point such that 3PB = PA , then the locus of P is

A ( - 9, 0) ,B ( - 1, 0) are two points. If P is a point such that PA : PB = 3 : 1 , then the locus of P is

A(-9,0),B(-1,0) are two points.If P is a point such that PA:PB=3:1, then the locus of P is

A and B are fixed points and P moves such that PA=nPB and n ne 1 . The locus of P is