To find the value of \( f(3) \) for the function \( f(x) = 2x - 4 \):

1. Substitute \( x = 3 \) into the function:
   \[
   f(3) = 2(3) - 4
   \]

2. Simplify the expression:
   \[
   f(3) = 6 - 4 = 2
   \]

Therefore, \( f(3) = 2 \).

Would you like details or have any questions?

Here are some related questions to expand your understanding:

1. What is \( f(5) \) for the function \( f(x) = 2x - 4 \)?
2. How would you find the inverse of the function \( f(x) = 2x - 4 \)?
3. What is the slope of the function \( f(x) = 2x - 4 \)?
4. If \( f(a) = 10 \), what is the value of \( a \) for the function \( f(x) = 2x - 4 \)?
5. How would you graph the function \( f(x) = 2x - 4 \)?
6. What is the y-intercept of the function \( f(x) = 2x - 4 \)?
7. How does the function \( f(x) = 2x - 4 \) change if it is transformed to \( f(x) = 2x - 1 \)?
8. How do you determine if the function \( f(x) = 2x - 4 \) is increasing or decreasing?

**Tip:** Always check your work by substituting your answer back into the original equation to verify its accuracy.

Learn how to find f(3) for the function f(x) = 2x - 4 using function notation and linear equation principles. This problem involves substituting values into the function and simplifying to find the output. Suitable for students in Grades 7-9.

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