We say that it is a plane with two scales called x – axis and y – axis, which are perpendicular to each other and thus form the right angles with each other. x- Axis is the scale which is placed horizontally on the plane Its marking starts with zero at the origin and as we move towards right direction the numbers increase by 1 unit and as we move towards left of origin , the number reduce by 1 unit. Know More About :- Logarithmic Calculator The Coordinate Plane