The vertex form of a quadratic function is 

. This video contains examples and shows how the form is derived by completing the square.

A number is divisible by another number if the answer does not have a remainder. Or, said another way, if the divisor is a factor of the dividend.

A symbol used to represent a number. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 are digits. For example, 19 has two digits, 1 and 9.

Long division is a method you can use to divide numbers by hand

The remainder is what you’re left with when dividing one whole number by another

Mathagon

Quadratic Function

Coefficient a

Coefficient b

Coefficient c

Axis of Symmetry

Drawing a Parabola

Factorized Form

Vertex Form

Quadratic Functions

The vertex form of a quadratic function is f(x) = a(x – h)² + k. This video contains examples and shows how the form is derived by completing the square. 

How Do You Write a Quadratic Function in Vertex Form?