the join of (-3,2) and (4,6) is cut by x-axis in the ratio ??
upasana bhuyan
13 Years agoGrade 12
3 Answers
Akash Kumar Dutta
13 Years ago
let the intersection point be (x,0) and the ratio be k:1 then apply section formula and u get, 2+6k=0 k=-1/3 hence the join is cut externally in the ratio 1:3 ANS.
Nishant Chandrashekar
13 Years ago
let the pt in x-axis be (h,0)
let the ratio be k:1
(-3,2)------------------(h,0)--------(4,6)
k 1
from section formula for y-coordinate
0={6k+1(2)}/{k+1}
ie,k=-(1/3)
-ve sign indicates that (h,0) divides the line externally
Hence ,x-axis divides the join of pts in the ratio 1:3 externally
sravani sanikommu
13 Years ago
the join of (x,y) and (p,q) is cut by x-axis in the ratio -y;q because on x-axis y-coordinate is 0 y-axis -x;p on y-axis x-coordinate is 0