Math Problem Statement

The function y = f(x) is graphed below. What is the average rate of change of the function f(x) on the interval 1 ≤ x ≤ 3?

Solution

The question asks for the average rate of change of the function f(x)f(x) on the interval 1x31 \leq x \leq 3.

The average rate of change of a function over an interval [a,b][a, b] is calculated using the formula: Average rate of change=f(b)f(a)ba\text{Average rate of change} = \frac{f(b) - f(a)}{b - a} Here, the interval is 1x31 \leq x \leq 3, so a=1a = 1 and b=3b = 3.

From the graph:

  • The value of f(1)f(1) appears to be approximately 8-8.
  • The value of f(3)f(3) appears to be approximately 66.

Now we can calculate the average rate of change: f(3)f(1)31=6(8)31=6+82=142=7\frac{f(3) - f(1)}{3 - 1} = \frac{6 - (-8)}{3 - 1} = \frac{6 + 8}{2} = \frac{14}{2} = 7

Thus, the average rate of change is 77.

Would you like more details, or have any questions about this?

Related Questions:

  1. How do you interpret the average rate of change in real-life scenarios?
  2. How does the average rate of change differ from the instantaneous rate of change?
  3. What are the characteristics of functions with a constant average rate of change?
  4. How would the average rate of change change if the interval were 1x51 \leq x \leq 5?
  5. How can you determine concavity or inflection points from the rate of change?

Tip:

To estimate values from a graph more accurately, try identifying key points or using graphing software to enhance precision.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Average Rate of Change

Formulas

Average rate of change = (f(b) - f(a)) / (b - a)

Theorems

Slope of a Secant Line

Suitable Grade Level

Grades 9-12