SOLUTION: Find the axis of symmetry. y = –x^2 – 8x + 1

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Question 125907: Find the axis of symmetry. y = –x^2 – 8x + 1
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
To find the axis of symmetry, use this formula:

x=-b%2F%282a%29

From the equation y=-x%5E2-8x%2B1 we can see that a=-1 and b=-8

x=%28--8%29%2F%282%2A-1%29 Plug in b=-8 and a=-1


x=8%2F%282%2A-1%29 Negate -8 to get 8


x=%288%29%2F-2 Multiply 2 and -1 to get -2



x=-4 Reduce


So the axis of symmetry is x=-4