Select the relation that is not a function. Group of answer choices

{(2, 3), (4, 5), (5, 6), (7, 8)}

{(3, 0), (4, 0), (5, 0), (6, 0)}

{(2, 5), (3, 4), (1, 6), (2, 7)}

{(-3, -2), (-4, 2), (-5, -2), (-6, 4)}

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.