Originally Posted by

**Slipery** So.. Math is frustrating =(

Here is my question:

Determine the slope of the tangent to y= 1/1-x at the point (2, -1) without constructing a table. Explain what you are doing.

The related example in the book that they give me for this question was a bit confusing because their point was (4,4).

With the same question (different function) and the point (4,4) they said:

To find the equation of the tangent, approximate the slope by setting a value for x close to be, so use 4.001. The slope can be found by using

m= ( f(4.001) - f(4))/ (4.001 - 4)

Would have been nice if they had used two different digits for the points!