Learn all Concepts of Coordinate Geometry Class 9 (with VIDEOS). Check  Coordinate Geometry Class 9
The x and y axis divide the graph into 4 quadrants

In 1st quadrant  x is positive, y is positive

In 2nd quadrant – x is negative, y is positive

In 3rd quadrant – x is negative, y is negative

In 4th quadrant – x is positive, y is negative.
Quadrant
X
Y
Example
I
+
+
(1, 2)
II
−
+
(−1, 2)
III
−
−
(−1, −2)
IV
+
−
(1, −2)