SOLUTION: Find the axis of symmetry. y = x^2 + 7x + 4

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Question 96022: Find the axis of symmetry.
y = x^2 + 7x + 4
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%2B7x%2B4 we can see that a=1 and b=7

x=%28-7%29%2F%282%2A1%29 Plug in b=7 and a=1


x=%28-7%29%2F2 Multiply 2 and 1 to get 2


So the axis of symmetry is x=-7%2F2 or x=-3.5 (in decimal form)