Q. 105.0( 2 Votes )

If point (x, y) i

Answer :

We have A → (2, 1)

B → (1, –2)

P → (x, y)

Using the distance formula,

AP =

BP =

Since P is equidistant from A and B

∴ AP = BP

Squaring both sides, we get

x² +y² – 4x – 2y + 5 = x² +y² – 2x + 4y + 5

2x + 6y = 0

or x + 3y = 0

∴ The correct option is A.

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