To evaluate \( f(x) = 3x \), you need to substitute a specific value of \( x \) into the function.

For example, if \( x = 2 \), then:

\[
f(2) = 3(2) = 6
\]

Do you have a particular value of \( x \) you'd like to evaluate, or should I choose one for demonstration?

### Follow-up Questions:
1. What is the result of \( f(x) \) when \( x = -1 \)?
2. How would the function change if it were \( f(x) = 3x + 5 \)?
3. Can you graph the function \( f(x) = 3x \)?
4. What happens to \( f(x) \) as \( x \to 0 \)?
5. What is the inverse of the function \( f(x) = 3x \)?

**Tip:** Linear functions like \( f(x) = 3x \) always produce a straight line when graphed.

Learn how to evaluate the linear function f(x) = 3x with step-by-step instructions. Understand how to substitute values of x and analyze the behavior of linear functions. Suitable for students in Grades 6-8, covering key algebraic concepts.

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