Math Problem Statement

Graph the following inequality: |x| > 2

Solution

The inequality provided is x>2|x| > 2. To solve and graph this inequality, we need to understand what the absolute value inequality means:

  1. x>2|x| > 2 implies that the distance of xx from 0 is greater than 2. In other words, xx is either less than -2 or greater than 2.

    • This splits into two inequalities: x<2orx>2x < -2 \quad \text{or} \quad x > 2

In terms of a number line:

  • The solution consists of two regions: one to the left of -2 and one to the right of 2.
  • The values at x=2x = -2 and x=2x = 2 are not included in the solution, so we use open circles at -2 and 2.
  • The graph should have arrows extending leftward from -2 and rightward from 2, representing all values less than -2 and greater than 2.

Correct Answer:

The correct graph will have open circles at -2 and 2, with shaded lines extending outwards from these points (to the left of -2 and to the right of 2).

From the image:

  • The bottom-right graph correctly represents the inequality x>2|x| > 2, with open circles at -2 and 2 and shading to the left of -2 and right of 2.

Would you like more details or have any questions?

Here are five related questions to expand on this concept:

  1. How would you graph x2|x| \geq 2 instead of x>2|x| > 2?
  2. What does the graph of x<2|x| < 2 look like?
  3. How do you solve inequalities with absolute values inside a quadratic equation?
  4. How do you represent compound inequalities on a number line?
  5. What real-life scenarios can be modeled by absolute value inequalities?

Tip: When graphing absolute value inequalities, always remember to split the inequality into two cases and check whether to include or exclude the boundary points (using open or closed circles).

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Math Problem Analysis

Mathematical Concepts

Absolute Value Inequality
Number Line Graphing

Formulas

|x| > a implies x < -a or x > a

Theorems

Absolute Value Inequality Theorem

Suitable Grade Level

Grades 8-10