Question

The ratio in which the line x + y + 1 = 0 divides the line segment
joining (2, 1) and (-2,-1) is taken in order)

1:2 internally
1:2 externally
2:1 internally
2:1 externally​

Answer 1

Explanation:

firstly we have to find equation of line joining (2,1) and (-2,-1).

y-2=2(x-1)

y-2=2x-2

y=2x

intersection point (-1/3,-2/3)

using formule of dividing line segment

-1/3=m2-2n/m+n

-2/3=m-n/m+n