Math Problem Statement

Solve and graph the following inequality: 2x + 5 > 11.

Solution

Let's solve the inequality step by step:

Inequality: 2x+5>112x + 5 > 11

Step 1: Isolate 2x2x by subtracting 5 from both sides:

2x+55>1152x + 5 - 5 > 11 - 5 2x>62x > 6

Step 2: Solve for xx by dividing both sides by 2:

x>62x > \frac{6}{2} x>3x > 3

Solution:

The solution to the inequality is x>3x > 3.

Graphing the solution:

  • The graph should have an open circle at x=3x = 3 (because it is strictly greater than 3, not greater than or equal to).
  • The arrow should point to the right, indicating values greater than 3.

Conclusion:

The correct graph should have an open circle at 33 and the line should extend to the right, showing that all values greater than 3 satisfy the inequality.

Looking at the graphs in the image:

  • The correct graph is the second one on the right (showing an open circle at 3 and the line pointing to the right).

Would you like more details or have any questions?

Here are 5 related questions for practice:

  1. How would the solution change if the inequality were 2x+5112x + 5 \geq 11?
  2. What happens if you change the inequality to 2x+5<112x + 5 < 11?
  3. Can you explain the meaning of an open versus a closed circle on the graph?
  4. How would you solve 2x+5<12x + 5 < -1?
  5. How do you graph an inequality like x4x \geq -4?

Tip: Always remember to reverse the inequality sign if you multiply or divide by a negative number when solving inequalities!

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Math Problem Analysis

Mathematical Concepts

Inequalities
Algebra
Linear Equations

Formulas

2x + 5 > 11
x > (11 - 5) / 2

Theorems

Properties of inequalities
Isolating variables in inequalities

Suitable Grade Level

Grades 6-8