Distance Between Two Points in Coordinate Geometry

In the coordinate plane, point P is located at (4, 2) and point Q is located at (0, 0).

What is the distance between points P and Q?

To calculate the distance between two points $(x_1, y_1)$ and $(x_2, y_2)$, use the distance formula:

$$ d = \sqrt{{(x_2 - x_1)}^2 + {(y_2 - y_1)}^2} $$