The points- (1,2.5) (3,7.5) (6,15)

These points represent three coordinates in a Cartesian coordinate system.

(1,2.5) is a point located at 1 on the x-axis and 2.5 on the y-axis.
(3,7.5) is a point located at 3 on the x-axis and 7.5 on the y-axis.
(6,15) is a point located at 6 on the x-axis and 15 on the y-axis.