Is cancellation a technique to reduce fractions to the lowest terms?

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Ineed to know the answer to this algebra question.

Write the percent as a fraction or mixed number in simplest form. 0.8%