Math Problem Statement

25−4x> −7 on a number line

Solution

To represent the inequality 254x>725 - 4x > -7 on a number line, let's first solve it.

Step 1: Solve for xx

We begin by isolating xx.

254x>725 - 4x > -7

Subtract 25 from both sides:

4x>725-4x > -7 - 25

4x>32-4x > -32

Now, divide both sides by -4. When dividing by a negative number, remember to flip the inequality sign:

x<324x < \frac{-32}{-4}

x<8x < 8

Step 2: Represent x<8x < 8 on a number line

  • Draw a number line.
  • Mark the point 88 on it.
  • Since the inequality is strict (i.e., <<), we will use an open circle at 88 to indicate that 88 is not included.
  • Shade all numbers to the left of 8 to represent x<8x < 8.

Would you like me to generate a number line to visualize this solution?

Related Questions:

  1. What is the process for solving inequalities that involve multiplication or division by negative numbers?
  2. How do you represent solutions of inequalities that include "greater than or equal to" on a number line?
  3. How does flipping the inequality sign work when dividing by negative numbers?
  4. Can inequalities be solved using the same steps as equalities?
  5. How do you solve compound inequalities?

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

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities
Number Line Representation

Formulas

Basic inequality manipulation rules: If you multiply or divide both sides of an inequality by a negative number, flip the inequality sign.

Theorems

Properties of inequalities
Number line representation of inequalities

Suitable Grade Level

Grades 7-8