# The general vector form of the equation of a line

Vector Equation**r** = **c** + Λ (**d**–**c**)

Where **c** and **d** are position of C and D.

**Question**

The coordinate of point C & D are (0,1) and (1,2) respectively.

- Find the vector equation of line CD.
- Determine if the point of (2,18) lies on the CD.
- Determine if the point of (3,5) lies on the CD.

**Answer**

- Equation
- No
- No

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