Posted by **sam** on Sunday, July 11, 2010 at 7:15pm.

Find the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function f(x)=-2x^2+2x+9

- algebra -
**Henry**, Monday, July 19, 2010 at 9:30pm
Y = -2X^2 + 2X +9.

Vertex form: a( X - h)^2 + k.

h = Xv = -b/2a = -2/-4 = 1/2

k = Yv = -2(1/2)^2 + 2(1/2) + 9 = 19/2

V(h,k) = (1/2,19/2). a is negative; the

parabola opens downward. Therefore, the

vertex is a max. The line of symmetry is = h = 1/2.

## Answer this Question

## Related Questions

- Algebra - Find the vertex, the line of symmetry, the maximum or minimum of the ...
- algebra - Find the line of symmetry, the maximum or minimum value of the ...
- algebra - find the vertex, the line of symmetry, the maximum or minimum value of...
- Algebra2 - Complete parts a – c for each quadratic function: a. Find the y-...
- ALGEBRA - Find the vertex, the line of symmetry, the maximum or minimum value of...
- Math - find the vertex line of symmetry the minimum naximum value of the ...
- math - find the vertex, the line of symmetry and the maximum or minimum value of...
- Algebra2 - Complete parts a – c for each quadratic function. a. Find the y-...
- algebra - graph the function. find the vertex line of symmetry, and maximum or ...
- math algebra trig - For the graph of each function, find an equation of the line...

More Related Questions