Math Problem Statement

Solve the compound inequality: -1 < 3x - 4 ≤ 14. Graph the solution on the number line.

Solution

The given compound inequality is:

1<3x414-1 < 3x - 4 \leq 14

Step-by-step solution:

We will solve the compound inequality in two parts. This is essentially solving two inequalities combined into one.

Part 1: Solve 1<3x4-1 < 3x - 4

  1. Add 44 to both sides: 1+4<3x-1 + 4 < 3x 3<3x3 < 3x

  2. Divide both sides by 33: 1<x1 < x x>1x > 1

Part 2: Solve 3x4143x - 4 \leq 14

  1. Add 44 to both sides: 3x4+414+43x - 4 + 4 \leq 14 + 4 3x183x \leq 18

  2. Divide both sides by 33: x6x \leq 6

Combined Solution:

We now combine the two parts: 1<x61 < x \leq 6 This means the solution for xx is all values between 11 and 66, but xx is strictly greater than 11 and less than or equal to 66.

Graph on the number line:

On the number line:

  • There will be an open circle at x=1x = 1 (because x>1x > 1, not including 11).
  • There will be a closed circle at x=6x = 6 (because x6x \leq 6, including 66).
  • A line segment will connect these two points.

Do you have any questions or would you like further details on this solution? Here are 5 related questions to expand your understanding:

  1. How would you solve the compound inequality 32x5<7-3 \leq 2x - 5 < 7?
  2. What does an open circle and closed circle on the number line represent in inequalities?
  3. How do you graph the solution of x>2x > 2 and x8x \leq 8 on a number line?
  4. What is the difference between solving a compound inequality and a simple inequality?
  5. Can compound inequalities have more than two parts?

Tip: Always check if the inequality signs are strict (< or >) or inclusive (≤ or ≥) before graphing your solution!

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Math Problem Analysis

Mathematical Concepts

Algebra
Compound Inequalities

Formulas

Inequality manipulation
Solving compound inequalities

Theorems

Properties of Inequalities

Suitable Grade Level

Grades 8-10