The interval notation for the range of the function shown in the graph is:

\[ (-\infty, 2] \]

This means that the range includes all real numbers from negative infinity up to and including 2.

Would you like further clarification or have any other questions?

Here are five related questions to consider:
1. How do you express the domain of a function in interval notation?
2. What is the significance of brackets \([ ]\) and parentheses \(( )\) in interval notation?
3. How do you find the range of a quadratic function algebraically?
4. Can the range of a function ever be all real numbers? If so, under what conditions?
5. How can you determine the interval notation for a function's domain from its graph?

**Tip:** Remember, in interval notation, a bracket \([ ]\) indicates that the endpoint is included in the interval, while a parenthesis \(( )\) indicates that the endpoint is not included.

Explore interval notation and its application in describing the range of functions. Learn how to interpret interval notation symbols like brackets and parentheses in mathematical expressions. Suitable for high school students and anyone interested in mathematical notation.

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