Find the Equation of the Tangent Line to the Curve $$f ( x ) = - 4 \sqrt { x } ; x = 9$$

question 122

Multiple Choice

Find the equation of the tangent line to the curve when x has the given value.
- $$f ( x ) = - 4 \sqrt { x } ; x = 9$$

• A) \(y = - \frac { 2 } { 3 } x - 8\)
• B) \(y = \frac { 2 } { 3 } x - 6\)
• C) \(y = - \frac { 2 } { 3 } x - 6\)
• D) \(y = - \frac { 2 } { 3 } x + 6\)

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