Co-Ordinate Geometry

To locate a point exactly on

To locate a point exactly on a plane, we need two references. For example, if a teacher says 'mark a point 6 cm from the left edge', infinite points a

Named after René Descartes

Named after René Descartes, this system uses two perpendicular number lines: X-axis (horizontal) and Y-axis (vertical) intersecting at origin O(0,0).

The coordinate plane is divided into

The coordinate plane is divided into four regions: Q1 (both coordinates positive), Q2 (x negative, y positive), Q3 (both coordinates negative), Q4 (x

Every point is represented as (x

Every point is represented as (x,y) where x is the abscissa (distance from Y-axis) and y is the ordinate (distance from X-axis). The order matters: (4

To plot point P(4

To plot point P(4,6): Start at origin O, move 4 units right along X-axis, then 6 units up parallel to Y-axis. For negative coordinates, move in opposi