Math Problem Statement

Use the graph of f(x) to evaluate the following: The average rate of change of f from x = 2 to x = 4. Give your answer as an integer or reduced fraction.

Solution

To solve this problem, we calculate the average rate of change of f(x)f(x) from x=2x = 2 to x=4x = 4. The formula for the average rate of change is:

Average Rate of Change=f(b)f(a)ba\text{Average Rate of Change} = \frac{f(b) - f(a)}{b - a}

From the graph:

  • At x=2x = 2, the value of f(2)=1f(2) = 1.
  • At x=4x = 4, the value of f(4)=3f(4) = 3.

Substituting into the formula:

Average Rate of Change=f(4)f(2)42=3142=22=1\text{Average Rate of Change} = \frac{f(4) - f(2)}{4 - 2} = \frac{3 - 1}{4 - 2} = \frac{2}{2} = 1

Final Answer:

The average rate of change is 1.

Would you like a deeper explanation or more help with interpreting graphs?


Related Questions:

  1. What is the average rate of change from x=0x = 0 to x=2x = 2?
  2. How do you find the rate of change if f(x)f(x) were nonlinear?
  3. Why does the formula for the average rate of change resemble the slope of a line?
  4. What does it mean when the average rate of change is negative?
  5. How can you visually confirm the rate of change using the graph?

Tip: When working with graphs, always carefully identify the coordinates of the points you're using to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Average Rate of Change
Linear Relationships
Graph Interpretation

Formulas

Average Rate of Change = (f(b) - f(a)) / (b - a)

Theorems

Slope Formula (resembling the average rate of change)

Suitable Grade Level

Grades 9-10