# Thread: calculate the difference quotient given the function

1. ## calculate the difference quotient given the function

Given the function , calculate the difference quotient
Can some one explain this? I plugged in -7/x for f(x) in the problem but then got stuck.

Thanks

2. your first step should look like this

$
\frac{\frac{-7}{x}-\frac{-7}{a}}{x-a}$

just finsh with the algrebra

3. $\displaystyle \frac{\dfrac{-7}{x}-\dfrac{-7}{a}}{x-a}$

Can you do simple algebra?