Question 131784
f(x) = 3(x-3)^2 
The vertex is: 
The line of symmetry is: 
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The line of symmetry is x=3
The vertex is (3,f(3)) or (3,0)
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{{{graph(400,300,-10,10,-10,10,3(x-3)^2)}}}}
Cheers,
Stan H.