Math Problem Statement

For the function 𝑓(π‘₯) graphed below, solve the inequality 𝑓(π‘₯) > 0 and answer in interval notation:

Solution

To solve the inequality f(x)>0f(x) > 0 using the given graph, we need to identify the intervals where the function's output is positive, meaning the graph is above the x-axis.

Based on the points plotted on the graph:

  1. The point (βˆ’3,4)(-3, 4) indicates f(βˆ’3)=4f(-3) = 4, which is positive.
  2. The point (βˆ’2,2)(-2, 2) indicates f(βˆ’2)=2f(-2) = 2, which is positive.
  3. The point (2,3)(2, 3) indicates f(2)=3f(2) = 3, which is positive.
  4. The point (3,2)(3, 2) indicates f(3)=2f(3) = 2, which is positive.

The other points indicate values where f(x)≀0f(x) \leq 0.

Now, we determine the intervals:

  • From the points, we see that the function is above the x-axis from x=βˆ’3x = -3 to x=βˆ’2x = -2 and from x=2x = 2 to x=3x = 3.

Therefore, the solution to the inequality f(x)>0f(x) > 0 is:

(βˆ’3,βˆ’2)βˆͺ(2,3)(-3, -2) \cup (2, 3)

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

Here are five related questions you might consider:

  1. How can you determine if a function is positive using its graph?
  2. What does it mean when a function is below the x-axis?
  3. How would you solve the inequality f(x)<0f(x) < 0 for the same function?
  4. What does the point (0,βˆ’1)(0, -1) tell you about the function's value at x=0x = 0?
  5. How can you find where f(x)=0f(x) = 0 using the graph?

Tip: When working with inequalities involving functions, always pay attention to the intervals where the function changes sign, as these are crucial for determining where the function is positive or negative.

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Math Problem Analysis

Mathematical Concepts

Inequalities
Graphing Functions
Interval Notation

Formulas

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Theorems

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Suitable Grade Level

Grades 9-12