To evaluate $f(0)$ for the function $f(x) = 2x + 1$, simply substitute $x = 0$ into the function:

$f(0) = 2(0) + 1 = 0 + 1 = 1$

So, $f(0) = 1$.

Would you like further details or explanations on this?

Here are some related questions to expand your understanding:

1. What is $f(1)$ for the same function?
2. How does the slope of $f(x) = 2x + 1$ influence the graph of the function?
3. Can you find the value of $f(-3)$?
4. How would you find the x-intercept of the function $f(x) = 2x + 1$?
5. What does the function $f(x) = 2x + 1$ represent graphically?

Tip: The constant in a linear function $f(x) = mx + b$ represents the y-intercept, the point where the line crosses the y-axis.