Mathematics

Cartesian plane

कार्तीय तल

In Class 9 Mathematics, the Cartesian plane introduces students to the graphical language of Coordinate Geometry. They learn how two perpendicular number lines—the x-axis and y-axis—meet at the origin to form a coordinate system, and how the plane is divided into four quadrants. Students read and write ordered pairs, identify the coordinates of points, plot them accurately, and use the signs of coordinates to determine a point’s position. These skills help them represent geometric relationships clearly on a graph.