Sources:
Visual - various maths sites (credits to original creator)
Questions - Dong Zong's Textbook
suitable for SUEC (Maths), SPM (Maths and Add Maths) too
2. The three points P, Q, and R are the three quarter points on the line segment AB, respectively, and find the value of the ratio ¦Ë between them divided into AB.
https://www.allmath.com/points-coordinates.php
4. ratio = 2:1
5. ratio = 2:3
7. lambda = - 2
13. lambda = - 3/2
14. (b) y = 0
15. D = (x1 + l/k x2)/1+(l/k)
16. m=n=1