Which relation does not show a function? x = 15 y = 3x + 2y y = 3x - 2 y = -8 ya'll i really need a correct answer. thx.

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?