Posted by **Tifini** on Monday, July 9, 2012 at 2:51pm.

Suppose a parabola has its vertex at (0, 1) and its zeros at x = -3 and x = 3. Then equals _____.

A. 9-x^2

B. 1-1/9x^2

C. x^2-1

D. x^2-9

- Integrated Math 1 -
**Steve**, Monday, July 9, 2012 at 4:57pm
vertex at (0,1) means y = -ax^2 + 1 where a>0.

since y=0 when x=3, we have

y = -1/9 x^2 + 1

(B)

- Integrated Math 1 -
**Henry**, Monday, July 9, 2012 at 4:57pm
B. Y = 1-(1/9)x^2 = 1 - x^2/9.

V(0,1).

When Xv = 0,

Y = 1-0/9 = 1.

When X = -3,

Y = 1 - (-3)^2 / 9 = 1--1 = o.

When X = 3,

Y = 1- 3^2 / 9 = 1 - 1 = 0.

Choice B satisfies all requirements.

Therefore,the answer is B.

## Answer this Question

## Related Questions

- Integrated Math 1 - Suppose a parabola has its vertex at (0, 1) and its zeros at...
- Integrated Math 1 - Suppose a parabola f(x) has its vertex at (0, 25) and its ...
- algebra - Suppose a parabola has a vertex (-4,7) and also passes through the ...
- math - A parabola has the equation y = 4(x-3)^2-7 Choose 2 true statements: A) ...
- math - A parabola has the equation y = 4(x-3)^2-7 Choose 2 true statements: A) ...
- math - An equitorial triangles is inscribed in the parabola y^2=4ax, where one ...
- Math - 1.) If a = 2 and the vertex of a parabola is (3, -4), will there be a ...
- algebra - 6. Find the equation of each parabola described below. a) parabola ...
- math - 1 identify the coordinates of the vertex and the equation of the axis of ...
- Math: Parabola, Vertex - Find the vertex of the parabola associated with the ...