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Question

Point R(h, k) divides a line segment between the axis in the ratio 1: 2. Find equation of the line.

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Solution

Let A(x, 0) and B(0, y) be two points where the line interest x and y axis respectively and R(h, k) is a point divides AB in the ratio 1 : 2.

Then 2x+02+1=h and 0+y2+1=k

x=32h and y = 3k

Now equation of required line is

x32h+y3k=1 2x3h+y3k=1

2kx + hy = 3kh


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