In order to find the equation of a tanget line, you need the slope.

the problem I was given is

f(x) = and the point they want me to find it at is (1,-4)

my work so far has been

f'(x) =

f'(x) =

and finally

f'(x) =

Would I be correct in plugging two points into my final f'(x) in order to get the slope?

I thought I was done but, something is off in my logic and I'm not sure what.