SOLUTION: Help please, show all work. Find the axis of symmetry and the vertex of the graph of y=3x^2+12x+8. thank you.

SOLUTION: Help please, show all work. Find the axis of symmetry and the vertex of the graph of y=3x^2+12x+8. thank you.

Algebra.Com

Question 859077: Help please, show all work.
Find the axis of symmetry and the vertex of the graph of y=3x^2+12x+8.
thank you.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
You could try completing the square and adjust the equation into standard form.
This would start as
, and the term to add and subtract is 4.

------ and read what you need directly from this.

Standard Form for Parabola,
Vertex (h,k)
Symmetry Axis, x=h
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