Question

the coordinates of the points which divides the join of (-2,-2) and (-5,7) in ratio 2:1 (internally) is ??

Answer 1

hey mate
u can directly use section formula
which is
(mx1+nx2/(m+n),my1+ny2/(m+n))
where x1,x2,y1,y2 are pts u have and m,n are the ratio
so to get x use equation
it will be =(1x-2+2x-5)/3= -4
and fr y=(1×-2+2×7)/3=4
so coordinate will be (-4,4)
i hope u understood!!

Answer 2

let (-2,-2) be x1 and y1 and (-5,7) be X2 and y2.
let 2:1 be m:n
using section formula,
X coordinate =mx1+nx2/ m+n
=2(-2)+1(-5)/2+1
= -4+(-5)/3
=-4-5/3
=-3

y coordinate = my1+ny2/m+n
= 2(-2)+1(7)/2+1
= -4+7/3
=-1