Math Problem Statement
Solution
The task involves solving a system of linear inequalities graphically and identifying a point in the solution set. Here's the approach:
1. Rewrite the Inequalities:
- First inequality:
- Second inequality:
These are already in slope-intercept form ().
2. Graph the Lines:
-
For :
- Slope () is and y-intercept () is .
- Plot the y-intercept at .
- Use the slope to find another point: from , go up 1 and right 2 to .
- Draw a dashed line (inequality is strict, ).
-
For :
- Slope () is and y-intercept () is .
- Plot the y-intercept at .
- Use the slope : from , go down 2 and right 1 to .
- Draw a dashed line.
3. Shade the Regions:
- For : Shade below the line .
- For : Shade below the line .
The solution set is the overlapping shaded region below both lines.
4. Identify a Point:
From the graph:
- A point in the overlapping region could be .
Would you like detailed guidance on graphing or solving similar problems?
Here are related questions for practice:
- How do you determine the solution region for linear inequalities graphically?
- What does the slope of a line represent, and how is it used in graphing?
- Why are dashed lines used for inequalities with or ?
- How can you verify if a point lies in the solution set of a system of inequalities?
- What happens when two inequality regions do not overlap?
Tip: Always test a point (like ) in each inequality to verify the correct shading!
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Math Problem Analysis
Mathematical Concepts
Algebra
Graphing Inequalities
Linear Equations
Formulas
Slope-intercept form: y = mx + b
Graphical solution of inequalities
Theorems
Slope of a line
Graphical representation of inequalities
Suitable Grade Level
Grades 8-10
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