(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

determine where the graph of the function f(x) = (x-4)/(x^2-7) has a horizontal tangent line.

2. Relevant equationsused quotient rule. factored and simplified

3. The attempt at a solutioncame up with ((x^2-7)-(2x^2-8x))/(x^2-7)^2

then set to 0, and came up with -x^2-8x-7=0

then to find the points where the graph has a horizontal tan line, i came up with 2 situations: -(x+7)(x+1) = -7, -1; or (-x-7)(x+1) = 7, -1. which one is right, and did i do the rest of it correctly/

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# Homework Help: Algebra question

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