The table below represents the number of math problems Jana completed as a function of the number of minutes since she began doing her homework. Does this situation represent a linear or non-linear function, and why?Jana’s Math Homework ProgressMinutesMath Problems Completed1327312416519

The table gives the pairs (1, 3), (2, 7), (3, 12), (4, 16), and (5, 19). Each time interval is 1 minute, but the number of additional problems completed is 4, 5, 4, and 3, so the rate of change is not constant. Therefore, it represents a non-linear function: choice D.

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