Graphing y = ax^2 + c

Choose the correct graph of 

 $f\left(x\right)\ =\ x^2+3$  

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Choose the correct graph of

 $f\left(x\right)\ =\ -x^2-2.5$ 

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Choose the correct graph of

 $f\left(x\right)\ =\ -2x^2-1$ 

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Choose the correct graph of

 $f\left(x\right)\ =\ 4x^2+6$ 

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Choose the correct graph of

 $f\left(x\right)\ =\frac{1}{3}\ x^2-2$ 

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Choose the correct graph of

 $f\left(x\right)\ =\ -\frac{1}{4}x^2+3$ 

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Choose the correct graph of

 $f\left(x\right)\ =\ 3x^2-3.25$ 

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Choose the correct graph of

 $f\left(x\right)\ =\ -3x^2+2$ 

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Choose the correct graph of

 $f\left(x\right)\ =\ -\frac{3}{2}x^2-2$ 

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Choose the correct graph of

 $f\left(x\right)\ =\ 1.2x^2-1.5$ 

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