What do absolute values and temperatures on the Kelvin scale have in common?

I dont know why math incudes science

Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. By international agreement, absolute zero is defined as precisely; 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale; and - 273.15 degrees Celsius on the Celsius scale.