The adjoining figure shows the graph of \( \mathrm{y}=\mathrm{ax}^{2}+ \) \( \mathrm{bx}+\mathrm...

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The adjoining figure shows the graph of \( \mathrm{y}=\mathrm{ax}^{2}+ \) \( \mathrm{bx}+\mathrm{c} \), then which of the following is/are correct.
a. \( a0 \)
b. \( b0 \)
c. \( \mathrm{c}0 \)
d. \( b^{2}4 a c \)
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