Lesson 1B Integers and the Coordinate Plane 79Examples 1 and 2 Write an integer for each situation.- a loss of 11 yards 2. 6°F below zero
- a deposit of $16 4. 250 meters above sea level
- FOOTBALL The quarterback lost 15 yards on one play. Write an integer to
represent the number of yards lost.
Example 3 Graph each set of integers on a number line.- {11, -5, -8} 7. {2, -1, -9, 1}
Examples 4 and 5 Evaluate each expression.- |- 9 | 99 1 + | 7 | 10. |- 11 | - |- 6 |
= Step-by-Step Solutions begin on page R1.
Extra Practice begins on page EP2.
Examples 1 and 2 Write an integer for each situation.- a profit of $9 12. a bank withdrawal of $50
- 53°C below zero 14. 7 inches more than normal
- 2 feet below flood level 16. 160 feet above sea level
- an elevator goes up 12 floors 18. no gains or losses on first down
- GOLF In golf, scores are often written in relationship to par, the average
score for a round at a certain course. Write an integer to represent a score
that is 7 under par. - PETS Jasmine’s pet guinea pig gained 8 ounces in one month. Write an
integer to describe the amount of weight her pet gained.
Example 3 Graph each set of integers on a number line.- {0, 1, -3} 22. {3, -7, 6}
- {-5, -1, 10, -9} 24. {-2, -4, -6, -8}
Examples 4 and 5 Evaluate each expression.- | 10 | 26. |- 12 | 27. |- 7 | - 5
- 7 + | 4 | 29. |- 9 | + |- 5 | 30. |1 8 | - |- 10 |
B 31. |- 10 | ÷ 2 × | 5 | 32. 12 - |- 8 | + 7 3333 | 27 | ÷ 3 - |- 4 | - SCUBA DIVING One diver descended 10 feet and another ascended 8 feet.
Which situation has the greater absolute value? Explain. - MATH IN THE MEDIA Find an example of a positive integer and a negative
integer in a newspaper or magazine, on television, or on the Internet.
Explain what each integer means.
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