Cartesian Plane and Quadrants
- Origin ($O$): Coordinates $(0, 0)$.
- Quadrant I: $(+, +)$, Quadrant II: $(-, +)$, Quadrant III: $(-, -)$, Quadrant IV: $(+, -)$.
- Point on X-axis has $y = 0$; Point on Y-axis has $x = 0$.
High-yield revision notes, key concepts, formulas, and CBSE board examination questions for Class 9 Mathematics.
Join Class 8 to 12 CBSE & NCERT students mastering complex topics. Instant photo doubt solving, zoomable diagram notes, mock tests, and daily WhatsApp updates for parents.
