Question

.a line segment intersect the y-axis at b,if p(-3,5) be any point on line segment ab which divides the line in a ratio of 3:4 find coordinates of a and b.

Answer 1

See u have to only follow a formula which i m giving u try to solve it and if it still doesn't come ask me...
m1=3 and m2=4..
(m1x2+m2x1)/m1+m2..
hope helps u

Answer 2

Answer:

Step-by-step explanation:

a.(x,y).............................b(0,b)

The coordinate of line that intersect y axis at b is (0,b)

Coordinate of any point on AB line is  p(-3,5).

M1 : M2 = 3:4

Apply section formula,

M1 * x2 + M2 * x1 / (M1 + M2), M1 * y2 + M2 * y1 / (M1 + M2) = P (-3,5)

3 * 0+ 4 * x/ 7, 3 * b + 4 * y/7

3 * 0+ 4 * x/ 7 = - 3

4 x/7 = -3

x = -21/4

and similarly you can find other value easily.