What are the Slopes for all these lines the lines are in numerical order

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?

The answer is 9.7 cm

Omg that is a big question and weird words and i’m only 5