Understanding Inequality Solutions

Aug 22, 2024

Inequality Solutions Lecture Notes

Problem Statement

  • Inequality to solve: 3l - 6 ≥ 8
  • Objective: Describe the solutions in terms of l.

Steps to Solve the Inequality

  1. Isolate the term involving l:

    • Start with: 3l - 6 ≥ 8
    • Add 6 to both sides:
      • 3l - 6 + 6 ≥ 8 + 6
      • Simplifies to: 3l ≥ 14
  2. Divide by the coefficient of l:

    • Divide both sides by 3:
      • (3l)/3 ≥ 14/3
      • Simplifies to: l ≥ 14/3

Key Points

  • Adding 6 cancels out the -6 on the left side.
  • Dividing by a positive number (3) does not change the direction of the inequality.
  • Important to note: If dividing by a negative number, you would reverse the inequality sign.

Final Solution

  • The solution to the inequality is:
    l ≥ 14/3
  • This corresponds to the given choice in the options.