Math Problem Statement

Which number line best represents the solution to the inequality -4x + 29 > 19?

Solution

To solve the inequality 4x+29>19-4x + 29 > 19, follow these steps:

  1. Isolate the variable xx:

    Start by subtracting 29 from both sides:

    4x+2929>1929-4x + 29 - 29 > 19 - 29 4x>10-4x > -10

  2. Solve for xx:

    Divide both sides by 4-4, and remember to reverse the inequality sign since you're dividing by a negative number:

    x<104x < \frac{-10}{-4} x<2.5x < 2.5

The solution to the inequality is x<2.5x < 2.5.

Number Line Representation:

On a number line, the solution would be represented as all values to the left of 2.52.5, with an open circle at 2.52.5 to indicate that 2.52.5 itself is not included in the solution.


Do you need more details or have any questions?

Here are 5 related questions:

  1. How do you represent inequalities graphically on a number line?
  2. What happens to the inequality sign when dividing by a negative number?
  3. Can you explain when to use open or closed circles on a number line?
  4. What are some real-life applications of inequalities?
  5. How would you solve a similar inequality with a greater or equal sign?

Tip: Always remember to flip the inequality sign when multiplying or dividing by a negative number.

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Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities
Number Line Representation

Formulas

Basic inequality solving: ax + b > c

Theorems

Rule of reversing inequality when dividing by a negative number

Suitable Grade Level

Grades 6-8