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Question

the x coordinates of point p is twice its y coordinate .if p is equidistant from Q(2,-5) and R(-3,6), fing the coordinates of P

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Solution

Let the y-coordinate of P is mThen, x-coordinate of P is 2m.Now, coordinates of P is P2m,mNow, the given points are Q2, -5 and R-3, 6Now, PQ = PR2m-22 + m+52 = 2m+32 + m-622m-22 + m+52 = 2m+32 + m-624m2 + 4 - 8m + m2+ 25 + 10m = 4m2 + 9 + 12m + m2 + 36 - 12m2m + 29 = 452m = 16m =8So, coordinates of P is P16, 8.

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