Math Problem Statement

Solve the inequality.

StartAbsoluteValue 6 minus 5 x EndAbsoluteValue plus 1 greater than or equals 9

Solution

To solve the inequality 65x+19|6 - 5x| + 1 \geq 9, follow these steps:

Step 1: Isolate the absolute value expression

Subtract 1 from both sides of the inequality to isolate the absolute value: 65x+1191|6 - 5x| + 1 - 1 \geq 9 - 1 65x8|6 - 5x| \geq 8

Step 2: Remove the absolute value by considering two cases

The absolute value inequality AB|A| \geq B implies two possible cases:

  1. ABA \geq B
  2. ABA \leq -B

Applying this to our inequality: 65x8or65x86 - 5x \geq 8 \quad \text{or} \quad 6 - 5x \leq -8

Step 3: Solve each inequality

Case 1: 65x86 - 5x \geq 8 65x86 - 5x \geq 8 Subtract 6 from both sides: 5x2-5x \geq 2 Divide by -5, and remember to reverse the inequality sign because we are dividing by a negative number: x25x \leq -\frac{2}{5}

Case 2: 65x86 - 5x \leq -8 65x86 - 5x \leq -8 Subtract 6 from both sides: 5x14-5x \leq -14 Divide by -5, and reverse the inequality sign: x145x \geq \frac{14}{5}

Step 4: Combine the results

The solution to the inequality is: x25orx145x \leq -\frac{2}{5} \quad \text{or} \quad x \geq \frac{14}{5} In interval notation, this is: (,25][145,)\left( -\infty, -\frac{2}{5} \right] \cup \left[ \frac{14}{5}, \infty \right)

Would you like more details or have any questions?


Related Questions:

  1. How do you solve absolute value inequalities involving "less than"?
  2. What does it mean when an absolute value inequality has no solution?
  3. How do you graph solutions of absolute value inequalities on a number line?
  4. What happens if you multiply or divide an inequality by a negative number?
  5. Can absolute value inequalities have both "less than" and "greater than" conditions simultaneously?

Tip: Always be careful when dividing or multiplying inequalities by negative numbers, as it requires flipping the inequality sign.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Inequalities
Absolute Value

Formulas

-

Theorems

-

Suitable Grade Level

Grades 9-12