Math Problem Statement

Which inequality is represented by the graph shown? Explain why your choice is correct, compared to the other choices.

Solution

The graph in the image shows a number line with points marked at -8, -2, and a line segment connecting these points. This suggests the inequality involves absolute value.

The given options are:

  1. x+5<3|x + 5| < 3
  2. x+53|x + 5| \leq 3
  3. x+5>3|x + 5| > 3
  4. x+53|x + 5| \geq 3

Analyzing the Inequality

To determine the correct inequality, let's consider each option and what it represents on a number line:

  1. x+5<3|x + 5| < 3:

    • This means the distance from 5-5 is less than 33.
    • The solution would be: 8<x+5<2-8 < x + 5 < -2.
    • Subtract 55 from all parts: 13<x<7-13 < x < -7.
    • This doesn't match the segment between 8-8 and 2-2.
  2. x+53|x + 5| \leq 3:

    • This means the distance from 5-5 is less than or equal to 33.
    • The solution would be: 8x+52-8 \leq x + 5 \leq -2.
    • Subtract 55 from all parts: 13x7-13 \leq x \leq -7.
    • This also doesn't match the segment between 8-8 and 2-2.
  3. x+5>3|x + 5| > 3:

    • This means the distance from 5-5 is more than 33.
    • The solution would be: x+5>2x + 5 > -2 or x+5<8x + 5 < -8.
    • Subtract 55 from all parts: x>7x > -7 or x<13x < -13.
    • This doesn't match the segment between 8-8 and 2-2.
  4. x+53|x + 5| \geq 3:

    • This means the distance from 5-5 is more than or equal to 33.
    • The solution would be: x+52x + 5 \geq -2 or x+58x + 5 \leq -8.
    • Subtract 55 from all parts: x7x \geq -7 or x13x \leq -13.
    • This also doesn't match the segment between 8-8 and 2-2.

Correct Inequality

The inequality that matches the given graph is:

x+53|x + 5| \leq 3

Explanation:

  • The graph shows a closed interval [8,2][-8, -2].
  • This represents all xx values such that the distance from 5-5 is less than or equal to 33.
  • The correct inequality is x+53|x + 5| \leq 3.

Would you like further details or have any questions?

Relative Questions:

  1. What is the general solution for the inequality x+ab|x + a| \leq b?
  2. How do you graph xab|x - a| \leq b on a number line?
  3. Can you explain why x+53|x + 5| \leq 3 and x+5<3|x + 5| < 3 have different solution sets?
  4. How would the graph change if the inequality were x+5>3|x + 5| > 3?
  5. What are the steps to solve absolute value inequalities?

Tip:

When solving absolute value inequalities, remember to consider both the positive and negative scenarios to find the complete solution set.

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Inequalities

Formulas

|x + a| ≤ b
|x + a| < b
|x + a| ≥ b
|x + a| > b

Theorems

Absolute Value Inequality Theorem

Suitable Grade Level

Grades 7-9