Screen:
Proof diagram:
Tap route steps below or drag ratio point P Parallel: MN = ½ AB
Interactive route builder & ratio controls

1. Step-by-step route vectors

Collect like terms in a and b

2. Factorising & proving parallel / collinear

GCSE exam conclusion

Two non-zero vectors u and v are parallel if and only if one is a scalar multiple of the other (v = k u). Three points are collinear if the vectors between them are parallel and share a common point.