Question

Write the rule for the following arithmetic sequence:
1, -6, -13, -20,…

Answer 1

arithmetic has a constant change between each term, here it is -7...

Answer 2

linear

Answer 3

you notice for any term, the next term is always 7 less than the previous

Answer 4

then the first term is 1, so you want to start at that value...

Answer 5

a1, a2, a3, a4, …, an ; where a2 = a1 + d, a3 = a2 + d, and so on.

The general form will be

an = a1 + (n-1)*d

Answer 6

For any term n, the value is that, the first value + (n-1) times the constant value between terms, here d=-7

Answer 7

a1=1

Answer 8

you get all that or?

Answer 9

yes i did thank you.