The given function is:

$f(x) = -2x + 4$

This is a linear function, where:

• The slope (rate of change) is $-2$.
• The y-intercept is $4$, meaning the line crosses the y-axis at the point $(0, 4)$.

If you need further details or have any questions, feel free to ask!

Here are five related questions that you might find useful:

1. What is the value of $f(x)$ when $x = 2$?
2. How would the graph of $f(x) = -2x + 4$ look?
3. How do you find the x-intercept of this function?
4. How would the slope change if the equation was $f(x) = -2x + 6$?
5. How would you calculate the inverse of this linear function?

Tip: To find the x-intercept of a linear equation, set $f(x) = 0$ and solve for $x$.