31.
Long answer type questions
if the points (2.11 and 11,2 1 are equidistant from the point (x,y) show thatx+3y =
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ABCD
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Answers
Answered by
1
Answer:
The distances of the point (2,1) and (1,−2) from (x,y) are
(x−2)
2
+(y−1)
2
and
(x−1)
2
+(y+2)
2
units respectively.
According to the problem,
(x−2)
2
+(y−1)
2
=
(x−1)
2
+(y+2)
2
or, (x−2)
2
+(y−1)
2
=(x−1)
2
+(y+2)
2
or, −4x+4−2y+1=−2x+1+4y+4
or, 2x+6y=0
or, x+3y=0.
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