Given the task definition and input, reply with output. In this task, you are given a sentence in the English language. Your job is to translate the English sentence into the Spanish language.

If a drug has zero-order elimination kinetics, what formula would have the graph that describes the evolution of elimination (concentrations versus time), on an untransformed scale ?

Si un fármaco presenta cinética de eliminación de orden CERO, ¿Qué fórmula tendría la gráfica que describe la evolución de la eliminación (concentraciones versus tiempo), en una escala sin transformar?