Math Problem Statement

Solve the absolute value inequality: 2|x - 5| ≥ 8

Solution

To solve the given absolute value inequality:

2x582|x - 5| \geq 8

Step-by-Step Solution:

  1. Isolate the absolute value term:
    Divide both sides of the inequality by 2: x54|x - 5| \geq 4

  2. Interpret the absolute value inequality:
    The absolute value inequality AB|A| \geq B (where B>0B > 0) means: ABorAB.A \geq B \quad \text{or} \quad A \leq -B. Here A=x5A = x - 5 and B=4B = 4.
    Thus: x54orx54.x - 5 \geq 4 \quad \text{or} \quad x - 5 \leq -4.

  3. Solve each inequality:

    • For x54x - 5 \geq 4:
      Add 5 to both sides: x9.x \geq 9.
    • For x54x - 5 \leq -4:
      Add 5 to both sides: x1.x \leq 1.
  4. Combine the solutions:
    The solution is: x1orx9.x \leq 1 \quad \text{or} \quad x \geq 9.

Final Answer:

x(,1][9,)x \in (-\infty, 1] \cup [9, \infty)

Graphical Interpretation:

This solution means that xx is either less than or equal to 1, or greater than or equal to 9.


Would you like me to show this graphically or explain further? Let me know!

Related Questions:

  1. How would the solution change if the inequality were 2x5<82|x - 5| < 8?
  2. What if the inequality had \leq instead of \geq?
  3. How do you solve x+26|x + 2| \geq 6?
  4. What are the steps to solve 2x3>5|2x - 3| > 5?
  5. How can you write xab|x - a| \geq b in interval notation?

Tip:

Always isolate the absolute value term first before splitting the inequality into two cases.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Absolute Value Inequalities
Algebraic Inequalities

Formulas

|A| ≥ B implies A ≥ B or A ≤ -B

Theorems

Properties of Absolute Value

Suitable Grade Level

Grades 8-10