SOLUTION: What is the equation of the axis of symmetry of the graph of y=-3x^2-6x+4

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Question 853681: What is the equation of the axis of symmetry of the graph of y=-3x^2-6x+4
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The x value will be the same as that of the vertex. Put the equation into standard form through Completion of the Square. You can start with the step,
y=-3%28x%5E2%2B2x%29%2B4
y=-3%28x%5E2%2B2x%2B1%29%2B4-%28-3%29%2A1
... and YOU should finish this.

To understand more clearly about standard form and completing the square, see these:

What is Completing the Square
and
Solving Quadratic Equation using Completing the Square - making standard form