Math Problem Statement

Graph the inequality x > -4 on the coordinate plane and identify the region that satisfies the inequality.

Solution

To graph the inequality x>4x > -4, follow these steps:

  1. Draw the boundary line: Since the inequality is x>4x > -4, the boundary line is x=4x = -4. This is a vertical line that passes through x=4x = -4 on the x-axis. Since the inequality is strict (>> rather than \geq), the line should be dotted (not solid).

  2. Shade the region: Since x>4x > -4, shade the region to the right of the line, where the values of xx are greater than 4-4.

Now let's break it down visually:

  • Draw a dotted vertical line at x=4x = -4.
  • Shade the region to the right of this line, which represents all points where x>4x > -4.

Do you want a further explanation or have any questions?

Here are 5 questions to deepen your understanding:

  1. How would the graph change if the inequality were x4x \geq -4?
  2. What happens if you graph x<4x < -4 instead of x>4x > -4?
  3. How do you decide whether the boundary line is solid or dotted in any inequality?
  4. Can you describe how you would graph a two-variable inequality like y>2x+1y > 2x + 1?
  5. How can you use test points to verify which region to shade?

Tip: Always remember to use a test point (like x=0x = 0) to confirm which side of the boundary line to shade if you're unsure.

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Math Problem Analysis

Mathematical Concepts

Graphing Linear Inequalities
Coordinate Geometry

Formulas

-

Theorems

Properties of Inequalities

Suitable Grade Level

Grades 7-9