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What is the average rate of change of f(x)𝑓(𝑥) from x1=−2𝑥1=−2 to x2=3𝑥2=3? Please write your answer as an integer or simplified fraction.f(x)=−4x+3

Question

What is the average rate of change of f(x) from x1 = -2 to x2 = 3?

Given the function:

f(x) = -4x + 3

Please write your answer as an integer or simplified fraction.

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Solution

1. Break Down the Problem

We need to find the average rate of change of the function f(x)=4x+3 f(x) = -4x + 3 between the points x1=2 x_1 = -2 and x2=3 x_2 = 3 .

2. Relevant Concepts

The average rate of change of the function f(x) f(x) from x1 x_1 to x2 x_2 is given by the formula:

Average Rate of Change=f(x2)f(x1)x2x1 \text{Average Rate of Change} = \frac{f(x_2) - f(x_1)}{x_2 - x_1}

3. Analysis and Detail

  1. Calculate f(x1) f(x_1) and f(x2) f(x_2) :

    • f(2)=4(2)+3=8+3=11 f(-2) = -4(-2) + 3 = 8 + 3 = 11
    • f(3)=4(3)+3=12+3=9 f(3) = -4(3) + 3 = -12 + 3 = -9
  2. Apply the average rate of change formula: Average Rate of Change=f(3)f(2)3(2)=9113+2=205=4 \text{Average Rate of Change} = \frac{f(3) - f(-2)}{3 - (-2)} = \frac{-9 - 11}{3 + 2} = \frac{-20}{5} = -4

4. Verify and Summarize

The average rate of change is confirmed by the calculations, and the values were substituted correctly.

Final Answer

The average rate of change of f(x) f(x) from x1=2 x_1 = -2 to x2=3 x_2 = 3 is 4-4.

This problem has been solved

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