Question

A linear sequence has a 3rd term of 15 and a 4th term of 19 what is the 2nd term

Answer 1

11

Explanation:

Subtract the 3rd term to the 4th term then subtract the difference to the 3rd term to get the value of the 2nd term

19 - 15 = 4

15 - 4 = 11

Answer 2

Check the picture below.

is a LINEar sequence, namely an arithmetic sequence, to which in order to get the next number we simply add a common difference to the current, in this case the common difference is 4.