To find the common difference $d$ of an arithmetic sequence, we subtract the first term from the second term or any successive term from its previous one.

The given arithmetic sequence is: $-19, -14, -9, \dots$

Let's subtract the first term from the second term: $d = -14 - (-19) = -14 + 19 = 5$

Thus, the common difference $d$ is $5$.

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Here are 5 questions related to arithmetic sequences to explore further:

1. How do you find the $n$-th term of an arithmetic sequence?
2. Can you calculate the sum of the first $n$ terms of this sequence?
3. How would the sequence change if the common difference were negative?
4. What happens if the first term of the sequence changes?
5. How can arithmetic sequences model real-world situations?

Tip: In an arithmetic sequence, the common difference is always constant between consecutive terms!