Math Problem Statement
Graph the solution set.
x − y
≥
1
x + y
≤
3
Solution
To graph the solution set of the system of inequalities:
- x - y ≥ 1
- x + y ≤ 3
Step-by-step solution:
-
Graph the boundary lines:
- For x - y = 1, rearrange this to y = x - 1. This is a line with a slope of 1 and y-intercept at -1.
- For x + y = 3, rearrange this to y = -x + 3. This is a line with a slope of -1 and y-intercept at 3.
-
Shading the regions:
- For x - y ≥ 1: The inequality indicates that we should shade above the line y = x - 1 (since it's a "greater than" inequality).
- For x + y ≤ 3: The inequality indicates that we should shade below the line y = -x + 3 (since it's a "less than or equal to" inequality).
-
Find the intersection points:
-
To find where the lines intersect, solve the system of equations:
Set them equal to each other:
.Plug into :
.So, the lines intersect at the point .
-
-
Graph the solution set:
- The region where the two shaded areas overlap is the solution set. This is the region bounded by the lines and shaded accordingly.
I can generate the graph to visualize this. Would you like me to do so?
Related questions:
- How do we solve systems of inequalities with more than two inequalities?
- What are other methods to find the intersection of two lines algebraically?
- How does changing the direction of the inequality (≥ to ≤) affect the solution region?
- What happens when an inequality involves strict inequality (>, <)?
- How can we determine if a point is in the solution set?
Tip: Always test a point (such as the origin) to confirm the direction of shading in inequality graphs.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Inequalities
Graphing
Formulas
Slope-intercept form of a line: y = mx + b
Theorems
Intersection of lines
Solution sets of systems of inequalities
Suitable Grade Level
Grades 9-11
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