Question

What is the vertex of (3,-3)

Answer 1

Question:

Solution:

Note that the standard quadratic form of a quadratic polynomial is given by the following equation:

$ax^2+bx+c\text{ = }y$

so that, the vertex form of a quadratic equation is

$y\text{ = a(}x-h)^2+k$

where (h,k) is the so-called vertex. Thus, according to this, we can say that the equation that represents a vertex (h,k)=(3,-3) is

$y\text{ = 5(}x-3)^2\text{-}3$

then, we can conclude that the correct answer is:

$y\text{ = 5(}x-3)^2\text{-}3$