SOLUTION: What is equation of the axis of symmetry for y=-3(x-4)^2

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Question 958056: What is equation of the axis of symmetry for y=-3(x-4)^2
Answer by MathLover1(20850) About Me  (Show Source):
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There are two different formulas that you can use to find the axis of symmetry.
One formula works when the parabola's equation is in vertex+form and the other works when the parabola's equation is in standard+form.
If your equation is in vertex form, then the axis of symmetry is:
x=+h in the general vertex form equation y+=+%28x-h%29%5E2+%2B+k
If your equation is in standard form, then the formula for the axis of symmetry is:
x+=+-b%2F2a from the general standard form equation y+=+ax%5E2%2Bbx+%2B+c

your equation is in vertex form,the axis of symmetry is x=+h
y=-3%28x-4%29%5E2=>h=4
so, the axis of symmetry is x=4