Math Problem Statement

What is the average rate of change over the interval x = -2 to x = 0 for the given function f(x)?

Solution

To solve this question, we need to calculate the average rate of change of the function f(x)f(x) over the interval x=2x = -2 to x=0x = 0. The average rate of change formula is:

Average rate of change=f(b)f(a)ba,\text{Average rate of change} = \frac{f(b) - f(a)}{b - a}, where a=2a = -2 and b=0b = 0.

Step 1: Identify f(2)f(-2) and f(0)f(0)

From the graph:

  • At x=2x = -2, the value of f(x)=9f(x) = 9.
  • At x=0x = 0, the value of f(x)=1f(x) = 1.

Step 2: Apply the formula

Average rate of change=f(0)f(2)0(2)=192=82=4.\text{Average rate of change} = \frac{f(0) - f(-2)}{0 - (-2)} = \frac{1 - 9}{2} = \frac{-8}{2} = -4.

Final Answer:

The average rate of change is -4.

Would you like a step-by-step explanation of how this formula works?

Related Questions:

  1. What does the average rate of change represent geometrically on a graph?
  2. How is the average rate of change different from the instantaneous rate of change?
  3. What are the steps for identifying f(a)f(a) and f(b)f(b) from a graph?
  4. How would the average rate of change be calculated for a different interval?
  5. Can the average rate of change ever be zero, and if so, under what conditions?

Tip:

To avoid errors, always double-check the coordinates of the points you're using from the graph.

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Math Problem Analysis

Mathematical Concepts

Average Rate of Change
Linear Approximation

Formulas

Average rate of change formula: (f(b) - f(a)) / (b - a)

Theorems

Slope formula for a secant line on a graph

Suitable Grade Level

Grades 9-12