find the coordinates of the point dividing the line segment joining points A(1,6) and B (10,-12) in the ratio 4:5​

find the coordinates of the point dividing the line segment joining points A(1,6) and B (10,-12) in the ratio 4:5​

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  1. Answer:

    Using the section formula, if a point (x,y) divides the line joining the points (x

    1

    ,y

    1

    ) and (x

    2

    ,y

    2

    ) in the ratio m:n, then

    (x,y)=(

    m+n

    mx

    2

    +nx

    1

    ,

    m+n

    my

    2

    +ny

    1

    )

    Let the points be A(5,−2) and B(9,6). Let a point P(x,y) divides AB in the ratio 3:1.

    Therefore, we have

    P(x,y)=(

    3+1

    3×9+1×5

    ,

    3+1

    3×6+1×(−2)

    )

    P(x,y)=(8,4)

    Hence, the required point is (8,4).

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