Question

The perpendicular from the origin to a line meets it at the point (– 2, 9), find the equation of the line.

Answer 1

The slope of the line joining the origin (0, 0) and point (–2, 9) is

Accordingly, the slope of the line perpendicular to the line joining the origin and point (– 2, 9) is

Now, the equation of the line passing through point (–2, 9) and having a slope m₂ is