Type of Sequence Arithmetic sequence. Common Difference: 4
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When a sequence is arithmetic, the difference between two consecutive terms is constant. By examining our sequence we can see that this is the case.
-7 + 4 ⟶ -3 + 4 ⟶ 1 + 4 ⟶ 5 + 4 ⟶ ...
Therefore, the sequence is an arithmetic sequence with common difference 4.