SOLUTION: Find the vertex and axis of symmetry of the graph of the function. f(x) = x2 + 4x + 3

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Find the vertex and axis of symmetry of the graph of the function. f(x) = x2 + 4x + 3      Log On


   

Question 362982: Find the vertex and axis of symmetry of the graph of the function.
f(x) = x2 + 4x + 3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Complete the square.
f%28x%29=x%5E2%2B4x%2B3
f%28x%29=%28x%5E2%2B4x%2B4%29%2B3-5
f%28x%29=%28x%2B2%29%5E2-1
The vertex is (-2,-1).
The vertex lies on the axis of symmetry, x=-2.
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