Question

Find the ratio in which the point(2,1) divides the join of the point (1,-2) and (4,7).

Answer 1

hey friend here your answer is in image and ratio is 1:2

Answer 2

$hey \: dear \: \\ \\ \\ let \: the \: ratio \: k : 1 \\ then \: \\ x = \frac{mx2 + nx1}{m + n} \\ 2 = \frac{4k + 1}{k + 1} \\ 2k + 2 = 4k + 1 \\ 2k = 1 \\ k = \frac{1}{2}$

ratio=1:2

^_^