Math Problem Statement

Given the graph of y = f(x) (drawn in blue) and y = g(x) (drawn in red), answer the following questions: (a) Solve g(x) = 0, (b) Solve g(x) ≥ 0, (c) Solve f(x) < 0.

Solution

Let's go through each part of the problem using the graphs provided:

  1. Identifying the functions:
    • The blue line represents y=f(x)y = f(x).
    • The red line represents y=g(x)y = g(x).

Solutions

(a) Solve g(x)=0g(x) = 0:

  • To find where g(x)=0g(x) = 0, we look for points on the red line where it crosses the x-axis.
  • From the graph, g(x)=0g(x) = 0 when x=0x = 0.

Answer: x=0x = 0.

(b) Solve g(x)0g(x) \geq 0:

  • For g(x)0g(x) \geq 0, we are looking for intervals where the red line is above or on the x-axis.
  • From the graph, g(x)g(x) is non-negative for xx in the interval [0,8][0, 8].

Answer: [0,8][0, 8].

(c) Solve f(x)<0f(x) < 0:

  • To determine where f(x)<0f(x) < 0, we look for portions of the blue line below the x-axis.
  • From the graph, f(x)f(x) is less than zero for xx in the interval (8,4)(-8, -4).

Answer: (8,4)(-8, -4).

Would you like a more detailed explanation of any part?

Here are some related questions that may interest you:

  1. How would the solutions change if we needed g(x)>0g(x) > 0 instead of g(x)0g(x) \geq 0?
  2. Can you find intervals where both f(x)f(x) and g(x)g(x) are positive?
  3. What are the intervals where f(x)f(x) and g(x)g(x) intersect?
  4. How would you describe the symmetry (if any) in f(x)f(x) and g(x)g(x)?
  5. Could you find the slopes of f(x)f(x) and g(x)g(x) at certain intervals?

Tip: When solving inequalities graphically, remember to focus on where the function is positioned relative to the x-axis and its respective range.

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Math Problem Analysis

Mathematical Concepts

Graphing functions
Inequalities
Finding zeros of functions

Formulas

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Theorems

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Suitable Grade Level

Grades 8-10