Understanding Mathematical Terms

Refer to the English-Spanish Glossary, which starts on textbook page A39, if you need help with a definition or finding a textbook page with an example for a vocabulary word.

Summary

In Lesson 1, you learned how to use the addition and subtraction properties of equality. You will now see the similarity when you use the addition and subtraction properties of inequality.

Section 2-2 Lesson (pages 54-56)

Read and work through Examples 1 through 3. Remember, what you do to one side you must do the other side. Practice with the Monitoring Progress problems as you go, and then check your answers below.

Answers to Monitoring Progress (pages 54-56)

1. b > –7
   
2. m ≤ 8
   
3. y <
   
4. k ≤ –8
   
5. z ≥
   
6. p > –3
   
7. no; The additional electricity must be less than 800 watts, and the toaster uses 800 watts.