Question

The locus of p for which the distance form p to origin is double the distance from p to (1,2) is​

Answer 1

Step-by-step explanation:

let p (x,y) . use bound

$2 \sqrt{(x - 1) {}^{2} + (y - 2) {}^{2} } = \sqrt{ {x}^{2} + {y}^{2} }$

Note :

let A(1,2) and O(0,0) . By a little bit reasoning and visualize you can think it will be the perpendicular line to AO passing through point which divides AO in 2:1 .