When reflecting a function over the x-axis, you multiply the entire function by $-1$.

Given the original equation $f(x) = 3x - 5$, to reflect it over the x-axis, the new function would be:

$f'(x) = - (3x - 5) = -3x + 5$

Thus, the equation that shows the reflection of $f(x)$ over the x-axis is:

$f'(x) = -3x + 5$

Would you like any more details or clarifications? Here are 5 related questions to consider:

1. How do you reflect a function over the y-axis?
2. What happens when you reflect a quadratic function over the x-axis?
3. Can you describe how to translate a function vertically or horizontally?
4. What is the geometric interpretation of reflecting over the origin?
5. How do reflections affect the domain and range of a function?

Tip: When reflecting a function over the x-axis, always apply a negative sign to the entire function.