Question

find the single equation of a pair of straight line passing through the origin and perpendicular to the line pair represented by x^2 -xy -2y^2 =0​

Answer 1

Answer:

x=2y.

Step-by-step explanation:

x^2-xy-2y^2=0

x^2-xy+1/4y^2-1/4y^2-2y^2=0.

Implies ..( x-1/2y)^2=9y^2/4

So, x=2y.