Look at Part 1. Does
Yes; a relation shows a connection between two quantities (in this case,
Which variable is the input in this relation? Which variable is the output?
Look at Part 2. Which output value corresponds to an input of
What is the domain of the relation represented in the table?
What is the range of the relation?
Are the relations in Part 1 and Part 2 functions? How do you know?
Yes. For both relations, each input value only has one output value.
Look at Part 3. How can you determine whether a relation is a function based on its graph?
Determine whether each input value has only one output value by using the vertical line test.
Is the relation in Part 3 a function? How do you know?
No; if you draw a vertical line at
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