Understanding the Basics of Inequality Graphing

Oct 13, 2025 by wbrum.org 104 views

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Understanding the Basics of Inequality Graphing

Graphing inequalities is a crucial concept in mathematics, particularly in algebra and geometry. It involves representing the solution set of an inequality on a coordinate plane. In this article, we will focus on graphing the inequality $-5x + 6y \ \textgreater \ 12$ . To begin with, let's understand the basics of inequality graphing.

Key Concepts in Inequality Graphing

Inequality Sign: The inequality sign indicates the direction of the solution set. For example, the greater-than sign (>) indicates that the solution set lies above the line, while the less-than sign (<) indicates that the solution set lies below the line.
Boundary Line: The boundary line is the line that separates the solution set from the rest of the plane. It is represented by the equation of the inequality without the inequality sign.
Solution Set: The solution set is the region on the coordinate plane that satisfies the inequality.

Graphing the Inequality $-5x + 6y \ \textgreater \ 12$

To graph the inequality $-5x + 6y \ \textgreater \ 12$ , we need to follow these steps:

Step 1: Write the Equation of the Boundary Line

The equation of the boundary line is obtained by removing the inequality sign from the inequality. In this case, the equation of the boundary line is $-5x + 6y = 12$ .

Step 2: Graph the Boundary Line

To graph the boundary line, we can use the slope-intercept form of a linear equation, which is $y = mx + b$ , where $m$ is the slope and $b$ is the y-intercept. In this case, the slope is $-\frac{5}{6}$ and the y-intercept is $2$ . We can plot the y-intercept and then use the slope to find another point on the line.

Step 3: Shade the Solution Set

Once we have graphed the boundary line, we need to shade the solution set. Since the inequality is greater-than, we need to shade the region above the boundary line.

Graph A vs. Graph B

Now that we have graphed the inequality $-5x + 6y \ \textgreater \ 12$ , let's compare it with the two given graphs, Graph A and Graph B.

Graph A

Graph A represents the inequality $-5x + 6y \ \textgreater \ 12$ . It shows the boundary line and the solution set, which is the region above the boundary line.

Graph B

Graph B does not represent the inequality $-5x + 6y \ \textgreater \ 12$ . It shows a different boundary line and solution set, which does not match the inequality.

Conclusion

In conclusion, the correct graph that represents the inequality $-5x + 6y \ \textgreater \ 12$ is Graph A. It accurately shows the boundary line and the solution set, which is the region above the boundary line.

Key Takeaways

Graphing inequalities involves representing the solution set of an inequality on a coordinate plane.
The inequality sign indicates the direction of the solution set.
The boundary line is the line that separates the solution set from the rest of the plane.
The solution set is the region on the coordinate plane that satisfies the inequality.

Final Answer

The final answer is Graph A.

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Understanding the Basics of Inequality Graphing

Key Concepts in Inequality Graphing

Inequality Sign: The inequality sign indicates the direction of the solution set. For example, the greater-than sign (>) indicates that the solution set lies above the line, while the less-than sign (<) indicates that the solution set lies below the line.
Boundary Line: The boundary line is the line that separates the solution set from the rest of the plane. It is represented by the equation of the inequality without the inequality sign.
Solution Set: The solution set is the region on the coordinate plane that satisfies the inequality.

Graphing the Inequality $-5x + 6y \ \textgreater \ 12$

To graph the inequality $-5x + 6y \ \textgreater \ 12$ , we need to follow these steps:

Step 1: Write the Equation of the Boundary Line

The equation of the boundary line is obtained by removing the inequality sign from the inequality. In this case, the equation of the boundary line is $-5x + 6y = 12$ .

Step 2: Graph the Boundary Line

Step 3: Shade the Solution Set

Once we have graphed the boundary line, we need to shade the solution set. Since the inequality is greater-than, we need to shade the region above the boundary line.

Graph A vs. Graph B

Now that we have graphed the inequality $-5x + 6y \ \textgreater \ 12$ , let's compare it with the two given graphs, Graph A and Graph B.

Graph A

Graph A represents the inequality $-5x + 6y \ \textgreater \ 12$ . It shows the boundary line and the solution set, which is the region above the boundary line.

Graph B

Graph B does not represent the inequality $-5x + 6y \ \textgreater \ 12$ . It shows a different boundary line and solution set, which does not match the inequality.

Frequently Asked Questions

Q: What is the inequality sign in graphing inequalities?

A: The inequality sign indicates the direction of the solution set. For example, the greater-than sign (>) indicates that the solution set lies above the line, while the less-than sign (<) indicates that the solution set lies below the line.

Q: What is the boundary line in graphing inequalities?

A: The boundary line is the line that separates the solution set from the rest of the plane. It is represented by the equation of the inequality without the inequality sign.

Q: What is the solution set in graphing inequalities?

A: The solution set is the region on the coordinate plane that satisfies the inequality.

Q: How do I graph the inequality $-5x + 6y \ \textgreater \ 12$ ?

A: To graph the inequality $-5x + 6y \ \textgreater \ 12$ , you need to follow these steps:

Write the equation of the boundary line by removing the inequality sign from the inequality.
Graph the boundary line using the slope-intercept form of a linear equation.
Shade the solution set by shading the region above the boundary line.

Q: What is the difference between Graph A and Graph B?

A: Graph A represents the inequality $-5x + 6y \ \textgreater \ 12$ , while Graph B does not represent the inequality. Graph B shows a different boundary line and solution set, which does not match the inequality.

Conclusion

In conclusion, graphing inequalities involves representing the solution set of an inequality on a coordinate plane. The inequality sign indicates the direction of the solution set, the boundary line separates the solution set from the rest of the plane, and the solution set is the region on the coordinate plane that satisfies the inequality. By following the steps outlined in this article, you can graph the inequality $-5x + 6y \ \textgreater \ 12$ and understand the basics of inequality graphing.

Key Takeaways

Graphing inequalities involves representing the solution set of an inequality on a coordinate plane.
The inequality sign indicates the direction of the solution set.
The boundary line separates the solution set from the rest of the plane.
The solution set is the region on the coordinate plane that satisfies the inequality.

Final Answer

The final answer is Graph A.