Math Problem Statement

Which inequality is shown in this graph?

Solution

To determine which inequality is shown in the graph, let's first analyze the elements of the image:

  1. Line equation:

    • The red line passes through the points (-2, 2) and (0, -2).
    • The slope (mm) of the line is calculated as the change in yy divided by the change in xx: m=220(2)=42=2m = \frac{-2 - 2}{0 - (-2)} = \frac{-4}{2} = -2
    • So, the slope is 2-2, and using the point (0,2)(0, -2), we can determine the y-intercept, which is 2-2.
    • Therefore, the equation of the line is: y=2x2y = -2x - 2
  2. Shading:

    • The graph shows the area above the red line shaded, which means the inequality is y2x2y \geq -2x - 2.

Thus, the inequality represented by the graph is:

  • A. y2x2y \geq -2x - 2

Would you like more details or clarifications?

Here are 5 related questions to expand on this concept:

  1. How do you determine the slope of a line from two points?
  2. What is the difference between solid and dashed lines in inequality graphs?
  3. How do you know whether to shade above or below the line?
  4. Can a linear inequality have multiple solutions? Why or why not?
  5. What does the y-intercept represent in a graph?

Tip: Always remember that the inequality sign (\geq or \leq) determines where to shade on the graph: above for \geq and below

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing Inequalities
Slope-Intercept Form

Formulas

y = mx + b (slope-intercept form)

Theorems

Graphing Linear Inequalities
Understanding Slope and Y-Intercept

Suitable Grade Level

Grades 8-10