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OpenStudy (anonymous):
Write the quadratic equation in vertex form... y=(2/3)x^2+4x-1?
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OpenStudy (anonymous):
multiply it in 3/2 ------ > (3/2)y=x^2+6x-(3/2) ---> (3/2)y+ (3/2)+9 =x^2+6x+9
OpenStudy (anonymous):
(3/2)y+(21/2)=(x+3)^2
OpenStudy (anonymous):
(3/2)(y+7)=(x+3)^2
OpenStudy (anonymous):
vertex = (-3,-7)
OpenStudy (anonymous):
that's it.
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