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OpenStudy (anonymous):
Determine the equation of the axis of symmetry. y = -5x2 - x + 9
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OpenStudy (anonymous):
it is the same as finding the first coordinate of the vertex use \(x=-\frac{b}{2a}\)
OpenStudy (anonymous):
\[y=ax^2+bx+c\]\[y=-5x^2-x+9\]\[a=-5, b=-1\]
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