Question

Let f(x)=x^3−12x. Calculate the difference quotientf(3+h)−f(3)/h for
h=.1
h=.01
h=−.01
h=−.1

The slope of the tangent line to the graph of f(x) at x=3 is m=limof h→0 f(3+h)−f(3)/h=

The equation of the tangent line to the curve at the point (3, -9 )is y= .