SOLUTION: What is the vertex of the parabola given by y=x^2+4x+3?

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Question 177932: What is the vertex of the parabola given by y=x^2+4x+3?
Answer by EMStelley(208) About Me  (Show Source):
You can put this solution on YOUR website!
If you have a quadratic equation in the form y=ax%5E2%2Bbx%2Bc, the x-coordinate of the vertex is always -b%2F%282a%29. Then to find the y-coordinate, you just plug in the x you just found back into the equation. So in this case, a=1, b=4, and c=3. So the x-coordinate of the vertex is -4%2F%282%2A1%29=-2. So to find y,
y=%28-2%29%5E2%2B4%28-2%29%2B3=4-8%2B3=-1
So the vertex is (-2,-1).