SOLUTION: Find a formula for the slope of f(x)= (7)/(x+4)

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Question 980453: Find a formula for the slope of f(x)= (7)/(x+4)
Found 2 solutions by josgarithmetic, solver91311:
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Where? Which point or for which x-value? Slope is for a line. Derivative is for a curve. Your function is not a line. Do you really want the derivative?


----response: Derivative.


%28ho%2AdHi-hi%2AdHo%29%2F%28ho%2Aho%29

system%28%28d%2Fdx%297=0%2C%28d%2Fdx%29%28x%2B4%29=1%29

df%2Fdx=%28%28x%2B4%29%2A0-7%2A1%29%2F%28x%2B4%29%5E2

highlight%28df%2Fdx=-7%2F%28x%2B4%29%5E2%29

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Use the quotient rule:



so

so

So



Or more simply:



John

My calculator said it, I believe it, that settles it