Question

Question #4d8f3

Answer 1

`k = -m`

Explanation:

My thought process here is that `y = -2x` and `y=mx` only intersect at the origin (unless m = -2 but that is redundant). For these three lines to be concurrent the third must also pass through the origin, the only way this can be achieved is to have

`x = 0`

ie

`k = -m`

This is the least and only value of k for which these lines are concurrent.