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Mathematics 10 Online
OpenStudy (anonymous):

What is the axis of symmetry of the graph of y = -x^2 - 3x + 9?

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

OpenStudy (alexwee123):

for this problem a=-1 and b=-3

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