Final answer:
To find a vertical line through point P that is parallel to line l, we need to find the x-coordinate of point P and create a vertical line passing through that x-coordinate. In this case, the x-coordinate of point P is 1. Therefore, the equation of the vertical line is x = 1.
Step-by-step explanation:
To find a vertical line through point P that is parallel to line l, we need to find the x-coordinate of point P and create a vertical line passing through that x-coordinate. In this case, the x-coordinate of point P is 1. Therefore, the equation of the vertical line is x = 1.