Question

If f(x) = \frac {4}{x- 2 }, find f'( 4 ).


Use this to find the equation of the tangent line to the curve y = \frac {4}{x- 2 } at the point ( 4 , 2.00000 ). The equation of this tangent line can be written in the form y = mx+b where m is:
and where b is: