A point P(x,y) moves so that the sum of the distance from P to the coordinate axes is equal to the distance from P to the point A(1,1).The equation ot the locus of P in the first quadrant is ?
Amit , 7 Years ago
Grade 11
1 Answers
Arun
Last Activity: 7 Years ago
Distance between P and x -axis = y
Distance between P and y-axis = x
Distance between P and A(1, 1) =
(x-1)² + (y-1)²
According to the question,
x + y = (x-1)² + (y-1)²
On squaring both sides, we get
x² +y² + 2xy = x² +1 -2x + y² +1 -2y
2xy +2x +2y = 2
xy + x +y -1 = 0
This is the locus of point P(x, y).
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