SOLUTION: what is the vertex and axis of symmetry of y= 3x^2+6x-1

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Question 693305: what is the vertex and axis of symmetry of y= 3x^2+6x-1
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
what is the vertex and axis of symmetry of y= 3x^2+6x-1
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Complete the square:
y = 3(x^2+2x+1)-1-3
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y = 3(x+1)^2 - 3
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Vertex: (-1,-3)
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Axis of symmetry: x = -1
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graph%28400%2C400%2C-10%2C10%2C-10%2C10%2C3x%5E2%2B6x-1%29
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Cheers,
Stan H.
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