Line Through a Given Point Parallel to a Given Line

Line Through a Given Point Parallel to a Given Line

If a given line has direction ratios $$a,b,c$$ and a required line passes through $$P(x_1,y_1,z_1)$$, then:

$$\frac{x-x_1}{a}=\frac{y-y_1}{b}=\frac{z-z_1}{c}$$

Usage

- Used to construct a line parallel to another line through a specified point.