1. Lesson 1

1.5. Explore

Mathematics 20-1 Module 7

Module 7: Absolute Value and Reciprocal Functions

 

Explore

 

This shows a photo of a thermometer lightly coated in snowflakes. The mercury in the thermometer has dropped to approximately –2.5

Comstock/Thinkstock



Over one 30-day period in Beaumont, the daily high temperature dropped from −1.5°C to −4.3°C, then rose to 9.7°C, and then dropped again to 2.9°C. How would you determine the total change in temperature for the 30-day period? In your calculations, does the order in which you subtract temperatures matter?

 

In this lesson you will learn how to determine the solution to this question and others like it. You will investigate the absolute value of numbers and numerical expressions.

 

course folder Save Module 7 Glossary Terms in your course folder now.



glossary

Here are some of the words you will want to define in Module 7 Glossary Terms in this lesson:

  • absolute value
  • absolute value symbol