Question

Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term.

-2, -4, -6, -8, ...

Answer 1

-2n

Explanation:

-2,-4,-6,-8

the difference between each number is 2

since all numbers are negatives it's going to be a negative nth term

now

-2 * (1) = -2

-2* (2) = -4

-2* (3) = -6

-2* (4) = -8