Question

10, 4. -2, -8 in an explicit formula

Answer 1

16 - 6n

Explanation:

10 , 4 , -2 , - 8 .....

This is arithmetic sequence

first term = 10

Common difference = 2nd term - first term

d = 4 - 10

d = -6

nth term = a₁ + (n -1)d

= 10 + (n - 1)*(-6)

= 10 + n*(-6) - 1*(-6)

= 10 - 6n + 6

= 10 + 6 - 6n

= 16 - 6n