Determine Whether the Graph of the Quadratic Function Opens Up $f ( x ) = - 8 x ^ { 2 } + 9 x + 1$

question 41

Multiple Choice

Determine whether the graph of the quadratic function opens up or down.
- $f ( x ) = - 8 x ^ { 2 } + 9 x + 1$

• A)down
• B)up

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