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Question

The point which divides the line segment joining the points (3,4) and (7,−6) internally into two parts such that one part is twice the other lies in which quadrant?

A
I
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B
II
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C
III
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D
IV
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Solution

The correct option is D IV
If a point divides the line segment AB joining two points in given ratio m:n internally, by section formula, the co-ordinates of a point are given as =(mx2+nx1m+n,my2+ny1m+n)

The ratio is m:n=2:1 and A(x1,y1) = (3,4) and B(x2,y2) = (7,6)

Point =(mx2+nx1m+n,my2+ny1m+n)

=(2×7+1×32+1,2×(6)+1×42+1)

=(173,83)

The point lies in IV quadrant.

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