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**is this right??**

**1. Homework Statement**

use the limit process to find the slope of the graph of the function at the specified point.

f(x)= (sqroot of (x + 10)), at (-1, 3)

**2. Homework Equations**

f(a)= f(x) - f(a)/x-f(a)

**3. The Attempt at a Solution**

Lim as x-> -1 = sqrt of (x + 10) - sqrt of (-1 + 10)/ x- (-1)

Lim as x-> -1 = sqrt of (x + 10) - sqrt of (9) / x - (-1)

Lim as x-> -1 = sqrt of (x + 10) - 3 / x + 1

thats as far as i could go...

so is that the slope? or do i need to do nething further?