Given:
The point is (1,-2).
To find:
The quadrant in which the point (1,-2) lies.
Solution:
We know that,
In first quadrant, both coordinates are positive, i.e., (x,y).
In second quadrant, x coordinate is negative but the y-coordinate is positive, i.e., (-x,y).
In third quadrant, both coordinates are negative, i.e., (-x,-y).
In fourth quadrant, x coordinate is positive but the y-coordinate is negative, i.e., (x,-y).
Where, x and y are two non-negative values.
In the given point (1,-2) the x coordinate is positive but the y-coordinate is negative.
Therefore, the point (1,-2) lies in fourth quadrant.