What is the formula to find the length between 2 coordinates?

The formula to find the distance between two coordinates ((x_1, y_1)) and ((x_2, y_2)) in a Cartesian plane is given by the distance formula:

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

This formula calculates the straight-line distance between the two points.