Unit+7-+Parameters

Heres a Review for all of ya'll

At the beginging of the course we had explored the linear function family which was defined by the equation //y= mx+ b// we have studied the roles of parameters //m// and b. What we found was that no matter the numbers we used to preplace either m or b our graphs had straight lines.

In this section we will explore a different equation. //y= a x b^x// //( y equals a times b to the power of x)// Parameter A- is the coefficient Parameter B- is the base in this unit we will explore the roles of parameter //a// and //b//

When parameter B is positive the line (curve) on the graph will INCREASE When parameter B is negative the line (curve) on the graph will DECREASE When parameter B is equal to 1 the line (curve) on the graph will STAY STRAIGHT

When parameter A is positve the line (curve) on the graph will INCREASE When parameter A is positive the line (curve) on the graphh will DECREASE When parameter A is equal to 1 the line (curve) on the graph will STAY STRAIGHT

If parameter B is negative the line will disapear.

Extra help for people who uses Ipods, here are some useful apps.
 * Algebra Touch -$1.99 (rated 4.5 stars)
 * Algebra -Free (rated four stars)