Irene R. answered 10/06/20
BS in Mechanical Engineering and Certified math teacher for 13 years
Hi Karina,
Any vertical line has an undefined slope. The equation of a vertical line will be of the form: x = a number
Since the x coordinate of the point in your problem is 4, the equation of the vertical line passing thru the point (4,3) would be: x = 4
Note: Any point on this line will have an x-coordinate of 4.

Irene R.
04/26/21
Evan W.
what about if it passes through (3,-4)???04/25/21