Find the equation of the line whose slope of 1 over 3 and goes through the point (3, 1)

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?

Ithink the right answer could be 50%

Common ratio, exponential function, half-life that's all i have so