Question

HELP PLEASE!
What do you know about the value of b in the function y=ax^2+bx+c when the x-coordinate of the vertex is an integer?

Answer 1

The x-coordinate of the vertex is

\(x = \dfrac{-b}{2a} = -\dfrac{1}{2} \times \dfrac{b}{a}\)

Answer 2

let n be an integer value

n = -b/(2a)

solve for b, what becomes evident about b? what type of number is it?