Write the first six terms of the arithmetic sequence a_{n}=a_{n-1}+4, a_{1}=-7

Question

Write the first six terms of the arithmetic sequence

a_{n} = a_{n - 1} + 4, a_{1} = - 7

Answer 1

Step 1
Given:

a_{1} = - 7, a_{n} = a_{n - 1} + 4

To find first six terms.
Step 2
From

a_{n} = a_{n - 1} + 4, a_{1} = - 7

and

n = 2, 3, 4, 5

we get

a_{2} = a_{1} + 4

= - 7 + 4

= - 3

a_{3} = 1

a_{4} = 5

a_{5} = 9

a_{6} = 13 .

Therefore first six terms are

- 7, - 3, 1, 5, 9, 13 .

Answer 2

Jeffrey Jordon

Answered 2022-01-15 Author has 2070 answers

Answer is given below (on video)

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