COO003 · Coordinate geometry · Classes 6–9
Quadrants
The axes split the plane into four quadrants, numbered anticlockwise from the top right: I (+, +), II (−, +), III (−, −), IV (+, −).
I II III IVQuadrants
📐 Formula
I: x > 0, y > 0; II: x < 0, y > 0; III: x < 0, y < 0; IV: x > 0, y < 0
✏️ Worked example
(−4, 3) is in quadrant II.
🌍 Where it is used
Reading graphs and locating points quickly.
❓ Quick check
In which quadrant is (5, −1)?
🏋️ Practice
EasyQuadrant of (−2, −7)?
Answer: III
MediumQuadrant of (0, 4)?
Answer: None: it is on the y-axis
ChallengeSigns of x and y in quadrant II?
Answer: x < 0, y > 0