Math Problem Statement

Graph the solution to the inequality |x + 8| ≤ 2 on the number line.

Solution

The inequality given is:

x+82|x + 8| \leq 2

To solve this absolute value inequality, we follow these steps:

Step 1: Break down the absolute value inequality

For any expression of the form AB|A| \leq B, the inequality can be rewritten as:

BAB-B \leq A \leq B

In our case, A=x+8A = x + 8 and B=2B = 2. So, we rewrite the inequality as:

2x+82-2 \leq x + 8 \leq 2

Step 2: Solve the compound inequality

Now, we solve for xx by isolating it in the middle:

  1. Subtract 8 from all parts of the inequality:

28x+8828-2 - 8 \leq x + 8 - 8 \leq 2 - 8

This simplifies to:

10x6-10 \leq x \leq -6

Step 3: Graph the solution

The solution is all xx-values between 10-10 and 6-6, inclusive. On a number line, this is represented by a solid line from 10-10 to 6-6, with filled circles at 10-10 and 6-6 to indicate that these values are included (since the inequality is \leq and not strict <<).

Would you like further details or have any questions?

Related Questions:

  1. How do you solve absolute value inequalities with >> instead of \leq?
  2. Can you solve a similar inequality like x54|x - 5| \geq 4?
  3. What happens when the absolute value inequality includes a negative number on the right-hand side, such as x+31|x + 3| \leq -1?
  4. Can this technique be applied to quadratic inequalities?
  5. How do you graph inequalities when the solutions are not within a single interval?

Tip:

When solving absolute value inequalities, remember to check if the inequality is possible. For example, x3|x| \leq -3 would have no solution because absolute values are always non-negative.

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Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities
Absolute Value

Formulas

|A| ≤ B can be rewritten as -B ≤ A ≤ B

Theorems

Properties of Absolute Value

Suitable Grade Level

Grades 7-9