Question

find the ratio in what ratio does the point p(-1 -1) divides the join of pt (-5 3) and (5-7)​

Answer 1

using section formula =

$p(x.y) = ( \frac{mx2 - nx1}{m + n} . \frac{my2 - ny1}{m + n} )$

i have used . instead of ,

given : p(-1,-1) ; A(-5,3) ; B(5,-7)

$p( - 1. - 1) = ( \frac{m( + 5) - n( - 5)}{m + n} . \frac{m( - 7) - n(3)}{m + n} ) \\ = ( \frac{5m + 5n}{m + n} . \frac{ - 7m - 3n}{m + n} )$

!!

$- 1 = \frac{5m + 5n}{m + n} \\ - m - n = 5m + 5n \\ - n - 5n = 5m + m \\ - 6n = 6m \\ - n = m \\ \frac{ - 1}{1} = \frac{m}{n}$

$- 1 = \frac{ - 7m - 3n}{m + n} \\ - m - n = - 7m - 3n \\ - m + 7m = - 3n + n \\ 6m = 2n \\ \frac{m}{n } = \frac{2}{6 } \\ \frac{m}{n } = \frac{1}{3}$

so !! m:n = 1:3

your question might be wrong!! check it !!!

you should get the same answer for both x and y substitution !!!

(hope it helps you!! Mark as brainliest if you are satisfied LoL!!!!)