Monday

April 21, 2014

April 21, 2014

Posted by **Ted** on Monday, November 8, 2010 at 5:07pm.

zeros of 5 and 9

an optimal value of -2

using the formula y=a(x-s)(x-t)

- math -
**Reiny**, Monday, November 8, 2010 at 5:31pmwe can start with

y = a(x-5)(x-9)

the vertex , where the function has an optimal value of -2, must be midway between the zeros , that is,

when the x = 7

so (7,-2) is the vertex, let's sub that into our equation

-2 = a((7-5)(7-9)

-2 = a(-4)

a = 1/2

equation: y = (1/2)(x-5)(x-9)

**Related Questions**

math - In Quadratics Grade Ten:How do you find the coordinates of the vertex? ...

Math - Given P(x) = x^3 - 3x^2 - 5x + 10 a evaluate P9x) for each integer value ...

Algebra - I don't even know where to start, teacher gave us this with no ...

Math - Use the given information about a polynomial whose coefficients are real...

Algebra - Information is given about a polynomial f(x) whose coefficients are ...

calculus--please help!! - I have two questions that I don't understand and need ...

business - A business is considering two sizes for its new warehouse: small and ...

pre-calculus - information is given about the polynomial f(x) whose coefficients...

Math - Consider the polynomial f(x) = 2x^3 – 3x^2 – 8x – 3. (a) By using the ...

algebra - Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the ...