Here is another question I am struggling with:
Find the equation of line with the slope -1 that is tangent to the curve 1/(x-1).
(5 marks: 1 mark each for a graph, for the general equation of the line, for getting the quadratic, for solving for k, for the solution)
So far I have this. I am taught in my book to solve by setting the y-values equal to each other.