Math Problem Statement

Solve for xx and graph the solution on the number line below.3≥x−7> 1

Solution

Let's solve the compound inequality 3x7>13 \geq x - 7 > 1.

First, break it into two separate inequalities and solve each:

  1. 3x73 \geq x - 7
  2. x7>1x - 7 > 1

Solving 3x73 \geq x - 7:

Add 7 to both sides:

3+7x3 + 7 \geq x

10x10 \geq x

This can be rewritten as:

x10x \leq 10

Solving x7>1x - 7 > 1:

Add 7 to both sides:

x7+7>1+7x - 7 + 7 > 1 + 7

x>8x > 8

Combining the solutions:

8<x108 < x \leq 10

Now, let's graph this solution on the number line:

  1. The number line will range around 8 and 10.
  2. Since x>8x > 8, we use an open circle at 8.
  3. Since x10x \leq 10, we use a closed circle at 10.
  4. Shade the region between 8 and 10.

Here is the number line representation:

Open circle at 8()Closed circle at 10\text{Open circle at 8} \quad (---) \quad \text{Closed circle at 10}

8 ∘─────────────────● 10

Would you like more details or have any questions about this solution?

Here are 5 questions you might want to ask:

  1. How do you graph inequalities on a number line?
  2. What is a compound inequality?
  3. How do you solve a system of inequalities?
  4. Can you explain interval notation for the solution set?
  5. How do you verify the solution of an inequality?

Tip: When solving compound inequalities, treat each part separately before combining the solutions for a complete answer.

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Math Problem Analysis

Mathematical Concepts

Inequalities
Compound Inequalities
Number Line Graphing

Formulas

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Theorems

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Suitable Grade Level

Grades 7-9