SOLUTION: find the vertex, line of symmetry, maximum/minimum and if the graph opens up or down of the following quadratic equation: f(x)=-4(x+7)^2+9

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: find the vertex, line of symmetry, maximum/minimum and if the graph opens up or down of the following quadratic equation: f(x)=-4(x+7)^2+9      Log On


   

Question 317295: find the vertex, line of symmetry, maximum/minimum and if the graph opens up or down of the following quadratic equation:
f(x)=-4(x+7)^2+9
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The equation is in vertex form.
The vertex is (-7,9).
The axis of symmetry is x=-7.
Since the coefficient of x%5E2 is negative, the parabola opens downward, the y value at the vertex is a maximum.
ymax=9
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