Question

please solve the solution

Answer 1

hi bujji,

your answer is A. 7:3 internally

SOLUTION

section formula
x= (m1x2+m2x1)/m1+m2
y= (m1y2+m2y1)/m1+m2

let required ratio be p:1
here
x= p.(-1)+1.5/p+1
y= p.3+1.(-7)/p+1

-p+5/p+1=x
3p-7/p+1=y

now (x,y) on x-axis means y=0
so
3p-7 / p+1 = 0
3p -7 = 0
p = 7/3

hence it divides internally in the ration 7:3

Also, the point on the x-axis that divides in 7:3 ratio is (0.8,0) as x= 4/5 from above equations
 
Hope it helped
Let me know if any doubts
Cheers !!!