An Important Question of M.L Aggarwal book of class 10 Based on Section Formula Chapter for ICSE BOARD.
You have to find the coordinates of the point which is three-fourth of the way from A and B.
This is the Question Number 06, Exercise 11 of M.L Aggarwal.
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Find the coordinates of the point which is three-fourth of the way from A (3, 1) to B ( – 2, 5).
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Let P be the point which is three-fourth of the way from A(3,1) to B(-2,5).
AP/AB = 3/ 4
AB = AP+PB
AP/AB = AP/(AP+PB) = 3/4
4AP = 3AP+3PB
4AP-3AP = 3PB
AP = 3PB
AP/PB = 3/1
The ratio m:n = 3:1
x1 = 3 , y1 = 1 , x2 = -2, y2 = 5
By Section formula x = (mx2+nx1)/(m+n)
x = (3×-2+1×3)/(3+1)
x = (-6+3)/4
x = -3/4
By Section formula y = (my2+ny1)/(m+n)
y = (3×5+1×1)/(3+1)
y = (15+1)/4
y = 16/4
y = 4
Hence the co-ordinates of P are (-3/4, 4).