What are the first ten terms of a sequence whose first term is -10 and whose common difference is -2?

Question

Please, I need help ASAP!

Answer 1

As with all sequences that have a "common difference" (arithmetic sequences), you start with the first term (-10), and just keep adding the common difference, until you have 10 terms. 

 

It doesn't matter whether the common difference is positive or negative -- you just keep adding it.

 

So you start with -10.  Add -2 to that and you get -12.

 

Add -2 to -12 and you get -14.

 

Add -2 to -14 and you get -16.

 

Keep doing that until you have 10 terms:

 

-10, -12, -14, -16, -18, -20, -22, -24, -26, -28