SOLUTION: find the vertex, the line of symmetry, the maximum/minimum value of the quadric function and graph the function f(x)3x^2-18+11 what is vertex what is equation of the line of sym

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Question 417370: find the vertex, the line of symmetry, the maximum/minimum value of the quadric function and graph the function
f(x)3x^2-18+11
what is vertex
what is equation of the line of symmetry x=
what the maximum/minimum

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
Using the vertex form of a parabola, y=a%28x-h%29%5E2+%2Bk where(h,k) is the vertex
f(x) = 3x^2-18x+11 |completing the square to put into vertex form
f(x) = 3(x^2-6)+11
f(x) = 3[(x-3)^2 - 9]+11
f(x) = 3(x-3)^2 - 16 Vertex is Pt(3,-16), minimum at this Pt ( a>)
Line of symmetry is x = 3