Find the slope then describe what it means in terms of the rate of change of the dependent variable per unit change in the independent variable.The linear function f(x) = -5.7x + 27 models the percentage of people, f(x), who eat at fast food restaurants each week x years after 1998.
A. m = 27; the percentage of people eating at fast food restaurants each week has increased at a rate of -5.7% per year after 1998.
B. m = -5.7; the percentage of people eating at fast food restaurants each week has decreased at a rate of -5.7% per year after 1998.
C. m = 5.7; the percentage of people eating at fast food restaurants each week has increased at a rate of -5.7% per year after 1998.
D. m = 5.7; the percentage of people eating at fast food restaurants each week has increased at a rate of 5.7% per year after 1998.
Answer: B
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