In order to find the distance from a point to a line, you use the distance formula:
Formula
The distance from a point to a line is
where is the point, is a point on the line and is a vector along the line.
Example 1
You have the line , , and the point . By inserting into the parametric equation, you can see that the point is on the line. That gives you
This means that the distance from to the line is .