In two-dimensional geometry, the line represented by the equation y=0.

Actually, it's not necessary that the equation be y=0, but rather y=n, with n a constant. Further, in a polar graph, the x-axis is often the outer circle, and therefore the equation is r=n, where r is the radius and n a constant.

Some folks use the terms ordinate and abcissa to refer to the axes. Usually these folks are high school math teachers who have run out of interesting things to teach.

Log in or register to write something here or to contact authors.

Sign up

Need help? accounthelp@everything2.com