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Question

The coordinates of point B on x-axis are given as (2m+1,2m8). The coordinates of B is

A
(0,9)
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B
(9,0)
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C
(9,1)
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Solution

The correct option is B (9,0)
Given:
Coordinates = (2m+1,2m8) ....(i)
Since, the point B lies on x-axis.
Coordinates of point B = (x,0) ...(ii)
Comparing equation (i) with equation (ii) we get,
(2m8) = 0
2m = 8
m = 4
Again, putting the value of m equal to 4 in (2m+1) we get,
(2m+1) = [2(4)+1]
= (8+1)
= 9
Therefore, coordinates of B are (9,0).

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