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Determine all values of x, (if any), at which the graph of the function has a horizontal tangent. y(x) = 6x (x−9)2 x = 6 x = 9 and x = −6 The graph has no horizontal tangents. x = −9 x = −9 and x = 6

Determine all values of x, (if any), at which the graph of the function has a horizontal tangent. y(x) = 6x (x−9)2 x = 6 x = 9 and x = −6 The graph has no horizontal tangents. x = −9 x = −9 and x = 6

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Determine all values of x , (if any), at which the graph of the function has a horizontal tangent.
y ( x ) = 6 x ( x − 9 ) 2
x = 6 x = 9 and x = − 6 The graph has no horizontal tangents. x = − 9 x = − 9 and x = 6

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