(main)[2]
Calculate the ratio $AD : DB$.
Mathematics 0580 · IGCSE · Vector geometry
Vector geometry — practice question
A diagram includes the points $O$, $A$, $D$ and $B$.
The diagram is not drawn to scale.
$\vec{OA} = x$, $\vec{OB} = y$ and $\vec{OD} = \frac{3}{7}x + \frac{4}{7}y$.
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\overrightarrow{AD}=-\frac{4}{7}x+\frac{4}{7}y$ or $\overrightarrow{DB}=-\frac{3}{7}x+\frac{3}{7}y$” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI