Questions and Answers
Which graph represents the following piecewise defined function?
Which of the functions graphed below is continuous?
Which graph represents the cost of Arionna's phone plan per minute, where x represents the minutes used and y represents the cost?
Which function defined below represents the cost of a towel order?
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What is the value of f(2) for the piecewise function f(x) graphed below?
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Which rules define the function graphed below?
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Which graph represents the following piecewise defined function?
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Which statement is correct regarding Geoffrey's tax bill under Plan A?
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Which of the functions graphed below has a removable discontinuity?
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What is the value of f(5) for the piecewise function f(x) graphed below?
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Study Notes
Piecewise Defined Functions Overview
- Piecewise defined functions consist of different expressions based on specific intervals or conditions.
- Graph representations can help visualize and understand the rules governing these functions.
Card Summaries
- Graphing Piecewise Functions: Selecting the correct graph for a piecewise function is crucial for understanding its behavior.
- Continuity in Functions: Identifying continuous functions is important; not all piecewise functions are continuous due to abrupt changes in value.
Cost Function Example
- A cell phone plan includes a base cost covering a limited number of minutes, with additional charges for exceeding that limit.
- The cost structure is defined as a flat rate for the first 300 minutes and a per-minute fee thereafter.
Pricing Models in Piecewise Functions
- The cost of ordering towels can also be defined piecewise, with different rates applying for varying quantities ordered.
- For example, the first set is at a higher cost, and subsequent quantities are discounted.
Evaluation of Piecewise Functions
- Evaluating specific values from piecewise functions involves locating the appropriate segment of the graph.
- For instance, finding f(2) or f(5) in the given examples shows how to locate values based on specified x inputs.
Tax Rate Comparison
- Tax rates can also be defined piecewise based on income thresholds.
- For example, a tax plan may charge different percentages based on income brackets, demonstrating a practical application of piecewise functions.
Discontinuity in Functions
- Functions can exhibit discontinuities, with some being removable.
- Recognizing these discontinuities is important for analyzing function behavior graphically.
General Tips
- When analyzing piecewise functions, always pay attention to the defined intervals and respective expressions.
- Understanding how to graph piecewise functions and assess continuity will enhance function evaluation skills.
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Description
Test your understanding of piecewise defined functions with these flashcards. Each card presents a unique problem focusing on function continuity and cost structures. Perfect for students needing reinforcement in this concept.
