Ratio of coordinate

Question

In the above question, how have they written the ratio given in the first step of solution?

See this post for the equation of a line in space. – Mauro ALLEGRANZA Dec 18 '16 at 19:44 — Mauro ALLEGRANZA, Dec 18 '16 at 19:44

score 0 · Answer 1 · answered Dec 19 '16 at 07:15

0

As both the points P and Q lie on the same line .

That's why their ratio is constant .

answered Dec 19 '16 at 07:15

1 Answers1