What is the common name given to a vertical line whose x-intercept is the origin?

I think I know what the answer is but i'm not 100% sure...

What is the common name given to a vertical line whose x-intercept is the origin?
x = 0, AKA the y-axis! Good Luck.
Reply:ordinate, or y-axis
Reply:the y axis


the line is x = 0

dendrobium