Take out you homework ( Page 12 from WB ) this will be one of the few times you need to separate a page out of your WB Write an equation to represent the following situation and solve.

 In what way can equations make solving a problem less difficult?  If given an equation how can you identify it as an equation and not and inequality ( or an expression)

A relation in mathematics is the way in which two numbers correspond to each other

For example if you were to jump out of a plane that was flying at 10,000 feet there are several pieces of data that we could take as you fell to the ground.

 When we have a set of numbers that are related then one number is considered dependent on the other.  The independent variable is called the domain  The dependent variable is called the range

 Some relationships exist so that only one Dependent variable (Range value) is possible for each independent variable (Domain) these are called functions  If more then one range value is possible for a given domain then you do not have a function

One type of function that you will encounter is the direct variation. Where k is a constant number. In other words when you divide the y by x you always get the same value

c. Use Direct Variation to solve a problem

Is the following an example of direct variation? If yes write the expression that will generate these domain and range values ( write the equation)