Units and scale of graphs

The  exercise appears under the Algebra I Math Mission. This exercise assists understanding of the graphical nature of models and how to determine appropriate scales.

Types of Problems
There are two types of problems in this exercise:


 * 1) Determine which graph has an appropriate scale: This problem provides a table of information and four options for scales. The student is asked to determine which scale is most appropriate for the information.Uasog1.png
 * 2) Select the true statements: This problem provides a model and several statements that may or may not be true about the model. The student is asked to select all the statements that are true.Uasog2.png

Strategies
Confidence with word problems and an ability to visualize graphs would ensure success on this exercise.
 * 1) The scales provided are extreme, so if the numbers are in 100s don't select 1's or 1000's.
 * 2) The Select the true statements problem will always have at least one correct statement.
 * 3) Statements about changing the scale and reading slope are common on the Select the true statements problem.

Real-life Applications

 * 1) Being able to make scales appropriately is important for graphing.
 * 2) An ability to create and interpret a good model is important in science and business fields.