Math Problem Statement
The graphs of two linear equations are shown above. The graph of π¦=π(π₯) is in green and the graph of π¦=π(π₯) is in blue. Find the interval where π(π₯)β₯π(π₯) . Write your answer in interval notation or as an inequality. For example, if you think that the solution is π₯<=β7 , you would this or enter (βπππ,β7]
Solution
To find the interval where , let's analyze the graph and focus on the intersection and behavior of the two functions.
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Intersection point: The graphs of (green) and (blue) intersect at approximately . This is the point where .
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Behavior of the functions:
- To the left of the intersection point (for ): The green line (representing ) is above the blue line (representing ). Hence, .
- To the right of the intersection point (for ): The green line is below the blue line, meaning .
Thus, the interval where occurs when , including the point where they intersect.
Final Answer:
The solution is .
Would you like more details on how to interpret the graph or solve this?
Here are five questions to expand this concept:
- How do you find the intersection points of two linear equations algebraically?
- How can you determine the slopes of linear functions from a graph?
- What does it mean when one function is above another on a graph?
- How do you express inequalities in interval notation?
- What role does the intersection point play in solving inequalities involving two functions?
Tip: When working with graphs of functions, always focus on key points like intersections and the behavior of the functions on either side of these points.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Graph Analysis
Inequalities
Formulas
y = mx + b (linear equation form)
Interval notation
Theorems
Intersection of two lines
Comparing functions
Suitable Grade Level
Grades 8-10
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