Graph of a sequence, origin “O”. Horizontal axis, "term number," with scale from 0 to 8, by 1’s. Vertical axis, "value of term," with scale 0 to 18, by 1's. Coordinates plotted (0 comma 1), (1 comma 4), (2 comma 7), (3 comma 10), (4 comma 13), and (5 comma 16).
Explain how you know this sequence is arithmetic.
Explain how you know this sequence is not geometric.