SOLUTION: Find vertex, line of symmetry, max/min value of the quadratic function, and graph the function. f(x) = -2x^2+2x+9 x-coordinate of the vertex is? y-coordinate of the vertex i

SOLUTION: Find vertex, line of symmetry, max/min value of the quadratic function, and graph the function. f(x) = -2x^2+2x+9 x-coordinate of the vertex is? y-coordinate of the vertex i

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Question 353039: Find vertex, line of symmetry, max/min value of the quadratic function, and graph the function.
f(x) = -2x^2+2x+9
x-coordinate of the vertex is?
y-coordinate of the vertex is?
the equation of the line of symmetry is x=?
Max/min of f(x) is ?
The value, f(1/2)=19/2 is the minimum or maximum?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

For the general quadratic function:

the coordinates of the vertex are:

The equation of the line of symmetry is:

The maximum or minimum of

is the function value at the vertex, that is,

. If the lead coefficient of

is positive, the graph opens upward and the vertex is a minimum. If negative, the graph opens downward and the vertex is a maximum.

is the maximum value of the function.

John

My calculator said it, I believe it, that settles it

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