The expression you provided for \( f(1) \) is \( f(1) = 2(-1) \).

Let's calculate:

\[
f(1) = 2(-1) = -2
\]

So, \( f(1) = -2 \).

Would you like any further details or have any questions?

Here are 5 related questions to expand on this concept:
1. What is the general form of the function \( f(x) \) if \( f(1) = -2 \)?
2. How would you calculate \( f(x) \) for other values of \( x \)?
3. What would \( f(-1) \) equal if the same function rule applied?
4. How do we determine if this function is linear or not?
5. What is the graphical representation of this function?

**Tip:** Always simplify expressions inside the function before evaluating the result.

Explore the concept of function evaluation with the example f(1) = 2(-1). Learn how to calculate and interpret function values in algebra, covering basic principles and practical applications. Suitable for Grades 7-9 students.

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