Dear student,
Coordinate Geometry has many application in our real life, some of them are as follows:
a) In a construction field we are mainly using the coordinate geometry. The sketch of the building is pure geometry.
b) When I instruct google maps to tell me the path from Place A to Place B, it basically:
(i) Finds the shortest possible path (or paths).
(ii) .Tells me the distance and time.
Lots and lots of coordinate geometry is used in finding the shortest path and the distance between them. Obviously, there are other concepts involved too.
c) It is used in MS Paint to draw curved and slanted lines.
d) It is also made in use while developing a game to specify the locations of objects and characters.
Regards