Question

x

2

4

b

Use the table to answer the question.

This table
shows x-
values with
corresponding
variables for
y-values.

y

a

Use the arithmetic sequence formula dn =- 8+(n -1) . 2 to find the missing values in the table.

(1 point)

O a =- 15;b =- 13

O a =- 12;b =- 10

O a =- 6;b =- 2

O a =- 10;b =- 8

Answer 1

Use dn = -8 + (n - 1)·2.

For n = 2: d2 = -8 + (2-1)·2 = -8 + 2 = -6, so a = -6.
For n = 4: d4 = -8 + (4-1)·2 = -8 + 6 = -2, so b = -2.

Answer: a = -6; b = -2.