Category:Equations of Straight Lines in Space

This category contains pages concerning Equation of Straight Line in Space/Symmetric Form:

Let $\LL$ be a straight line embedded in a cartesian $3$-space passing through the point $\tuple {x_1, y_1, z_1}$.

$\LL$ is expressed in symmetric form by the equation:

$\dfrac {x - x_1} l = \dfrac {y - y_1} m = \dfrac {z - z_1} n$

where $l, m, n \in \R$ are the direction ratios of $\LL$.