Find the derivative using limit process. -3x+2. Find the slope when x=4

Question

i know how to do the derivative part but I don't know what to do with the x=4

Answer 1

Use the limit definition of derivative.

 

lim     f(x + h) - f(x)

h->0  ____________

                 h

 

at x=4.

 

lim      f(4 + h) - f(4)

h->0   ____________

                   h

 

 

I believe you can take it from here.