Question

Use the quadratic equation y = x2 – 6x + 9.

Where does the vertex of the parabola lie?

Answer 1

Formula to find the x-coordinate of the vertex:

\(\sf \dfrac{-b}{2a}\)

Answer 2

Your equation is in the form of:

ax^2 + bx + c

Answer 3

So in this case, 'b' is -6 and 'a' is 1.

Answer 4

\(\sf \dfrac{-b}{2a}\)

\(\sf \dfrac{-(-6)}{2(1)}\)

Simplify

Answer 5

-1 * -6 = ?
2 * 1 = ?