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Mathematics 8 Online
OpenStudy (anonymous):

The graph of y=-5/x-2 is concave downward for all values of x such that? a) x<0 b) x<2 c) x<5 d) x>0 e) x>2

OpenStudy (tkhunny):

Shall we just look at the graph or must we resort to the 2nd Derivative?

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