calculus
posted by Don on .
I need help with the following question:
Which of the following is an example of a function whose derivative is always 3?
Choices are: f(x) = x=3
f(x) = 5x+3
f (x) = 3x+5
f(x) = 3
Thank you.

I wonder why you asked. Something is troubling that you asked. Derivative is slope.
f(x)=3x+5 line has a slope of 3, and a derivative of 3 for all x.