What is the equation of the vertical line through (2,3)

Answer 1

The vertical line through (2,3) is x=2.

Answer 2

Huh, almost a trick question. It's all right there, but you don't see it.

Any point on a vertical line is going to have the same x-value. (2,4),(2,56) and (2,23.876) are all on your line, right?

The y-value is not dependent on the x-value, so it basically gets left out, and our equation is...

x = 2