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OpenStudy (anonymous):
What is the axis of symmetry of the graph of y = -x^2 - 3x + 9?
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OpenStudy (anonymous):
help???
OpenStudy (anonymous):
|dw:1335914378350:dw|
OpenStudy (anonymous):
symmetry at the y axis
OpenStudy (anonymous):
oh! so its 9 ?
OpenStudy (alexwee123):
axis of symmetry formula =x= -b/2a
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OpenStudy (alexwee123):
for this problem a=-1 and b=-3
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