Lines in three dimensional space
There are also lines in three-dimensional space. However, their equation does not look like the equation of a linear function.
Instead of a slope, you have a direction vector in space. Lines have a definite position (as opposed to vectors).
Parametric equation of a line
The parametric equation of a line is:
The equation consists of
- a support vector: This is the position vector of any point on the line.
- the direction vector that determines the direction of the line.