Decide an equation for the tangent to the curve y=6x-x^2 at the point (4,8)(adsbygoogle = window.adsbygoogle || []).push({});

Well for this I thought I'd use this

6*4-4^2=8

6*8-8^2=-16

Then I thought I'd Use

DeltaY/DeltaX

8-(-16)/8-4 =6

Then I thought the answer was -6X - 16 But it Wasen't the answer should be

-2x -16

What am I doing wrong please help me!?

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# Tangent's equation

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