Given f ( x )

Given the function $f(x) = 2x + 3$, we need to find $f(4)$.

To do this, substitute $x = 4$ into the function:

$f(4) = 2(4) + 3 = 8 + 3 = 11$

Thus, $f(4) = 11$.

Would you like a more detailed explanation, or do you have any questions?

Here are 5 related questions for further exploration:

1. What is $f(0)$ for the function $f(x) = 2x + 3$?
2. How would you find $f(x)$ if the function was $f(x) = 3x + 1$?
3. What is the slope of the line represented by $f(x) = 2x + 3$?
4. What is the y-intercept of the function $f(x) = 2x + 3$?
5. How do you find the inverse of the function $f(x) = 2x + 3$?

Tip: In linear functions like $f(x) = 2x + 3$, the coefficient of $x$ represents the slope, and the constant term represents the y-intercept.