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[tex]\blue\textsf{\textbf{\underline{\underline{Question:-}}}}[/tex]
What is the common difference in the sequence -9, -4, 1, 6, 11,...?
[tex]\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}[/tex]
The common difference is a number you add or subtract in order to get to the next term; in this case, we add.
The common difference of this arithmetic sequence is 5.
So in order to get to the next term, we add 5.
-9+5=-4
-4+5=1
1+5=6
6+5=11, etc.,
Henceforth the common difference of this sequence is 5.
Good luck.
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