A point C(4,1) divides the Line Segment AB in the ratio 2 : 3.Co-ordinates of A are (1,3) and that of B are (5,y). Find the value of y.
-1
-2
2
3
By Section formula we get :
(2×y+3×3)2+3=1
⇒ 2y + 9 = 5
⇒ 2y = 5 - 9 = -4
⇒ y = -2.
A line segment joining A(-1,53 ) and B(a, 5) is divided in the ratio 1 : 3 at P, the point where the line segment AB intersects the y-axis. (i) Calculate the value of 'a'. (ii) Calculate the co-ordinates of 'P'.