Relations & Functions Part 1
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Lesson Summary:
In this lesson on Relations and Functions, students learn the terminology and concepts of ordered pairs, relations, functions, domains, ranges, and populations. They are shown how to determine if a relation is a function by using the definition that every value in the domain must correspond to only one value of the range. Additionally, they are introduced to the concepts of independent and dependent variables and how to identify them in a given scenario. The lesson ends with an exercise where students graph information and determine if it represents a function.
Lesson Description:
Terminology and concepts of relations and functions using ordered pairs.
Questions answered by this video:
- What is the difference between a relation and a function?
- What is the domain and range of a graph?
- How do you find and state the domain and range of a relation or function?
- How do you know if a relation is a function?
- What is the definition of a relation?
- What is the domain and range of (-4, 0), (-3, 1), (0, -2), (1, 2), (3, 3)?
- What is the definition of a function?
- What is an example of a relation that is not a function?
- How can you determine whether values in a table represent a function?
- What is an independent variable and a dependent variable in a real-world situation?
- How do you know which label is independent and which is dependent?
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Staff Review
This quick introduction to functions explains what makes a relation a function or not a function, how to determine what the independent and dependent variables are, and how to list out the domain and range. This is a great introductory tutorial for just learning about the concept of functions.
