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Mathematics 7 Online
OpenStudy (anonymous):

help please. Given the function f(x) = 2x-9 a.Find the rate of change between the two stated values for x: 6 to 9 b.Find the equation of a secant line containing the given points: (6, f(6)) and (9, f(9)

OpenStudy (helder_edwin):

the rate of change is given by \[ \large \frac{f(a)-f(b)}{a-b} \]

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