What does the graph of an arithmetic sequence always look like?

1. An arithmetic sequence adds the same amount at every step, so its rate of change is constant. 2. A constant rate of change is exactly what produces a straight line. 3. The plotted points therefore lie on a line, though the graph is a set of separate dots because the domain is the positive integers. 4. An exponential curve comes from a constant multiplier rather than a constant addition, so it belongs to geometric sequences. _Source: OpenStax Algebra and Trigonometry (CC BY 4.0), Ch 13 "Sequences, Probability and Counting Theory", section 13.2 Arithmetic Sequences_