Question

Use the table to answer the question.
This table shows x-values with corresponding variables for y-values.


x: 2 4 y: a b
Use the arithmetic sequence formula an = -8 + (n - 1) • 2 to find the missing values in the table.
(1 point)
• a = - 10;6 = -8
• a = -6;b = -2
a = -15;b=-13
Oa=-12:6=-10

Answer 1

Use n = x.
a = a2 = -8 + (2-1)·2 = -8 + 2 = -6.
b = a4 = -8 + (4-1)·2 = -8 + 6 = -2.

So a = -6; b = -2.