The graph of $y(x)=-x^2+bx+c$ is shown below. Determine the signs (+ or -) of $b$ and $c$.
$a=-1$ so the parabola opens downwards, but we can already see that from the given figure. How can we determine the sign of $b$ and $c$? Thank you in advance!
2026-05-15 06:12:45.1778825565
The graph of $y(x)=-x^2+bx+c$
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