Question

Sarah read that skateboarding burns about one hundred calories every twenty minutes. She made a table of values to compare time and calories burned.

Two column chart. Left column shows rows of twenty, forty, sixty, eighty, and one hundred in descending order. Right column shows rows of one hundred, two hundred, three hundred, four hundred, and five hundred in descending order.

Look at the table of values. Is the function described by the table linear or non-linear? How do you know?