Question 377542
Complete the square to convert to vertex form, {{{y=a(x-h)^2+k}}}
{{{y=-3x^2+6x}}}
{{{y=-3(x^2-2x)}}}
{{{y=-3(x^2-2x+1)-3(-1)}}}
{{{y=-3(x-1)^2+3}}}
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Vertex:({{{1}}},{{{3}}})
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{{{drawing(300,300,-5,5,-5,5,blue(line(1,100,1,-100)),grid(1),circle(1,3,0.2),graph(300,300,-5,5,-5,5,0,-3x^2+6x))}}}