Quadratic : what does it mean ? Presented by Rachel Cywinski July 2008

X 2 + 3x + 2 Why is this “ quadratic ”? 06/04/09 quadratic

Why is this “ quadratic ”?

Meet “x”. “ X” is a line. “ X” is one-dimensional. Here is “X”: _____ 06/04/09 linear

“ X” is a line.

“ X” is one-dimensional.

Here is “X”:

_____

Meet “ X 2 ”. “ X 2 ” is a square. “ X 2 ” is two-dimensional. Here is “ X 2 ”: _____ ____ 06/04/09 quadratic

“ X 2 ” is a square.

“ X 2 ” is two-dimensional.

Here is “ X 2 ”:

_____

____

Quadrilaterals Quadrilateral Parallelogram Trapezoid Rectangle Rhombus Square Isosceles Trapezoid Source: www.cod.edu/people/faculty/hubbardd/presentations/Math%200470/Geometry-Chapter4-5.ppt

X 2 + 3x + 2 _____ _____ _____ 06/04/09 2D + 1D + points

_____ _____ _____