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To find the range of the function defined by the set of points, we need to look at the second value of each pair. The range of a function is the set of all possible output values (or y-values).

Given points:
\[
(2, -1), (3, 0), (-7, 2), (-9, 1)
\]
The y-values are:
\[
-1, 0, 2, 1
\]

The range is simply the set of these y-values:
\[
\{-1, 0, 1, 2\}
\]

Would you like further clarification or more details on the topic?

Here are 5 related questions for further practice:
1. What is the domain of the function defined by the same set of points?
2. How do you find the range of a function from its graph?
3. Can the range of a function include repeated values?
4. How would you find the range of a function given its equation?
5. What is the difference between the domain and range of a function?

**Tip:** Always list the y-values (outputs) to find the range of a function from a set of points.

Find the range of the function defined by the set of points below. Express your answer as a set of numbers. (2, -1), (3, 0), (-7, 2), (-9, 1)

Learn how to find the range of a function from a set of points such as (2, -1), (3, 0), (-7, 2), (-9, 1). This problem involves identifying the y-values from each point and understanding the range in function theory. Suitable for students in Grades 6-8.

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