SOLUTION: What is the vertex in the quadratic equation x2 + 8x + 7 = y? Input your answer in the form: (x, y)

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: What is the vertex in the quadratic equation x2 + 8x + 7 = y? Input your answer in the form: (x, y)      Log On


   

Question 690020: What is the vertex in the quadratic equation x2 + 8x + 7 = y?
Input your answer in the form: (x, y)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the vertex in the quadratic equation x2 + 8x + 7 = y?
Input your answer in the form: (x, y)
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Conplete the square:
y = x^2 + 8x + 16 + 7 - 16
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y = (x+4)^2 - 9
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Vertex: (-4,-9)
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graph%28400%2C400%2C-10%2C10%2C-15%2C15%2Cx%5E2%2B8x%2B7%29
Cheers,
Stan H.
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