Math uses

There are many uses for our functions in the real world.

The square root of X function is used every day in engineering. When a engineer needs to find the hypotenuse of a triangle they would use the pathagorean theorem to find the missing side of the triangle. http://answers.yahoo.com/question/index?qid=20080929204029AA1e7be&vm=r

We encounter parabolas in everyday life. If you throw a football you can map out a parabola in the air. The football starts at your arm height and then throw it at a angle up for distance as it falls it causes a ark called the parabola.

http://acrospire.pbworks.com/C1+model+real-world+phenomena+using+quadratic+functions

the most common function people encounter in everyday life is a basic line. now the line can take many forms from a simple fence post or something. woodworkers use a line when measuring a piece of wood to build a cabinet. the line must be strait and even.