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Which is colder: a temperature of -2°F or -1°F?

16. Which is colder: a temperature of -2°F or -1°F? Justify your answer.
7. Use the number line to complete parts (a)-(d). Write the number that represents the phrase. Then determine which point on the number line corresponds to that number.
17. A loss of 7
18. A gain of 7
c. 3 greater than 0
d. 3 less than 0
8. Describe a real-world situation that the number -20 represents. Explain what 0 represents in your situation.

Answer

  1. 16. -2°F is colder than -1°F because it is a lower temperature on the Fahrenheit scale.

  2. 7.

    1. 17. A loss of 7 is represented by -7, which corresponds to point Z on the number line.

    2. 18. A gain of 7 is represented by 7, which corresponds to point W on the number line.

    3. c. 3 greater than 0 is represented by 3, which corresponds to point X on the number line.

    4. d. 3 less than 0 is represented by -3, which corresponds to point Y on the number line.

  3. 8. A real-world situation that the number -20 represents could be a bank account overdraft of $20. In this situation, 0 represents having no debt or balance in the account.

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