Posted by **jane** on Tuesday, November 25, 2008 at 5:21pm.

Let f(x) = 2/3-x

a) find the slope of the tangent to the graph of f at a general point x0 using the definition of the dervative.

b) use the result in part a to find the slope of the tangent at x0=1.

I am very confused.

My answer for (a) 1/ 6-6x-x^2

(b) -1

I compared them to a classmate - answers didnt agree.

I am lost.

## Answer this Question

## Related Questions

- calculus - 1. Which of the following expressions is the definition of the ...
- College Calculus - Let f(x) = 3x^2 - 2x + 1 a) write an equation of the line ...
- Calculus - Would you be able to help me with a couple of questions? thanks in ...
- calculus - Find the equation of the tangent line to the curve y=sqrt(x) at x = c...
- Calculus - I have a two part question that pertains to a curve (r(x)) and its ...
- maths help needed!(urgent) - find the equation of the tangent to y=x-(a^3/x^2) ...
- Math - The point P(8, −3) lies on the curve y = 3/(7 − x). (a) If Q ...
- calculus - Use the four-step process to find the slope of the tangent line to ...
- Calculus - Use the four-step process to find the slope of the tangent line to ...
- calculus - 8. Find the derivative of the function f(x) = cos^2(x) + tan^2(x) 9...