Math Problem Statement
Solution
The inequality given is:
To graph this inequality, we first look at the related linear equation:
- Find the y-intercept: The y-intercept is at , so the point is on the line.
- Find the slope: The slope is 4, which means for every 1 unit moved to the right (along the x-axis), we move up 4 units (along the y-axis). From the point , we can plot a second point by moving right 1 unit and up 4 units to reach the point .
Now, since the inequality is , the line is dashed (because the inequality does not include the equal sign). The shading is below the line, as values are less than the right-hand side of the equation.
Let's match this with the provided graphs:
- The first graph shows a shaded area above the line, which is incorrect for this inequality.
- The second graph shows a dashed line and shading below the line, which matches the inequality .
- The third graph shows shading above the line, which is also incorrect.
So, the second graph correctly represents the solution set for the inequality .
Would you like further explanation or more practice on inequalities? Here are some related questions:
- How would the graph change if the inequality was ?
- How can you determine if a point is in the solution set of the inequality?
- What is the difference between "strict" and "non-strict" inequalities in terms of graphing?
- How would you graph the inequality ?
- Can you explain how to find the shading region for inequalities with a negative slope?
Tip: Always remember that dashed lines are used for strict inequalities (like or ), and solid lines are used for non-strict inequalities (like or ).
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Math Problem Analysis
Mathematical Concepts
Linear Inequalities
Graphing Linear Inequalities
Formulas
y = 4x - 2
Theorems
Graphing linear inequalities
Shading regions for inequalities
Suitable Grade Level
Grades 8-10