Given the Equation or Other Information for a Parabola, Find $$\begin{array} { l } f ( x ) = a x ^ { 2 } + b x + c \\a < 0 ; b ^ { 2 } - 4 a c = 0\end{array}$$

question 107

Multiple Choice

Given the equation or other information for a parabola, find the matching description or graph.
- $$\begin{array} { l } f ( x ) = a x ^ { 2 } + b x + c \\a < 0 ; b ^ { 2 } - 4 a c = 0\end{array}$$

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Definitions:

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