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OpenStudy (anonymous):
Which of the following is the vertex of the function? y = x2 - 6x + 9
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OpenStudy (anonymous):
x axis of the vertex is a=1 b=-6 c=9 so x=-b/2a -(-6)/2*(1) so x vertex is 3 y vertex is c-b^2/4a so 9-(-6)^2/4(1) so 9-36/4 =-6.75
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