SOLUTION: write the quadratic function in the vertex form. then identify the axis of symmetry and vertex..y=x^2+7x-2

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: write the quadratic function in the vertex form. then identify the axis of symmetry and vertex..y=x^2+7x-2      Log On


   

Question 364961: write the quadratic function in the vertex form. then identify the axis of symmetry and vertex..y=x^2+7x-2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Complete the square.
y=x%5E2%2B7x-2
y=%28x%5E2%2B7x%2B49%2F4%29-2-49%2F4
y=%28x%2B7%2F2%29%5E2-8%2F4-49%2F4
y=%28x%2B7%2F2%29%5E2-57%2F4
The vertex is (-7%2F2,-57%2F4).
The vertex lies on the axis of symmetry, x=-7%2F2
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