A student plotted the data from a sleep study as shown in the graph below. The student used the equation of the line y=-0.09x + 9.24 to model the data. What does the rate of change represent in terms of these data?

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?