SOLUTION: Without graphing, find the line of symmetry. f(x) = (x + 8)2

SOLUTION: Without graphing, find the line of symmetry. f(x) = (x + 8)2 - 3

Question 248958: Without graphing, find the line of symmetry.
f(x) = (x + 8)2 - 3
Answer by dabanfield(803) (Show Source): You can put this solution on YOUR website!
Without graphing, find the line of symmetry.
f(x) = (x + 8)2 - 3
The function above is in the standard vertex form for a parabola:
y = (x-h)^2 + k
where the vertex of the parabola is at the point (h,k) and the axis of symmetry is the line x = h.
So in this case the vertex is (-8,-3) so the axis of symmetry is x = -8
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