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laila [671]
2 years ago
7

For the function f(x) = 2x - 11, what is the average rate of change over the interval -1 ≤ x ≤ 1? average rate of change:​

Mathematics
1 answer:
kobusy [5.1K]2 years ago
8 0

Answer:

Average rate of change is 2

Step-by-step explanation:

If a function f(x) is continuous over the interval [a,b], then the average rate of change over that interval is \displaystyle \frac{f(b)-f(a)}{b-a}:

\displaystyle \frac{f(b)-f(a)}{b-a}\\\\=\displaystyle \frac{f(1)-f(-1)}{1-(-1)}\\\\=\frac{(2(1)-11)-(2(-1)-11)}{1+1}\\ \\=\frac{(2-11)-(-2-11)}{2}\\ \\=\frac{-9-(-13)}{2}\\ \\=\frac{-9+13}{2}\\ \\=\frac{4}{2}\\ \\=2

Thus, the average rate of  change over the interval [-1,1] for the function f(x)=2x-11 is 2.

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