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प्रश्न
Find the coordinate of a point P which divides the line segment joining :
D(-7, 9) and E( 15, -2) in the ratio 4:7.
उत्तर
Let the point P divides DE in the ratio 4:7.
∴ cooordinates of P are
x = `(4 xx 15 + 7 xx - 7)/(4 + 7) = 1`
y = `(4 xx -2 + 7 xx 9)/(4 + 7) = 5`
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