1. Warm Up Problem
14.3 ÷ 0.2

2. Integers and Graphing
Lesson 5-1

3. Objectives
When given a situation, I can determine the correct integer.
I can explain the meaning of zero in each situation.

4. Vocabulary
integers – whole numbers: including positive numbers, negative numbers, and zero. negative integers – whole numbers that are less than zero, written with a – sign positive integers – whole numbers that are greater than zero

5. Example 1
Write an integer to represent the situation. Explain what zero would mean in each situation.
a 10-yard loss
Answer: Integer: -10
Zero: no yards lost or gained

6. 4 inches of rain above normal
Example 2
Write an integer to represent the situation. Explain what zero would mean in each situation.
4 inches of rain above normal
Answer: Integer: 4
Zero: Normal amount of rain

7. a $48 deposit into a savings account
Example 3
Write an integer to represent the situation. Explain what zero would mean in each situation.
a $48 deposit into a savings account
Answer: Integer: 48
Zero: the amount of money in account does not change

8. Got It? Write an integer and the meaning of zero in each situation.
1) a gain of $2 a share
2) 10 degrees below zero
3) a withdrawal of $15 from your bank account

9. Example 4
Graph -7 on the number line.

10. Example 5
Graph the set of integers {-4, 2, -1} on a number line.

11. Example 6
Graph the set of integers {0, 2, -3}

12. Got It?
For each problem, draw a number line and graph the integer sets. (0 does not have to be the center)
4) {-3, 0, -2}
5) {8, -6, -9, 5}
6) {2, -9, 0}

13. Example 7
Kendall and her dad played golf on four different days. The data set {-1,+1,-3,+2} shows Kendall’s scores in relation to par. Graph the scores. Explain the meaning of zero in this situation.
Zero is par.

14. Got It?
7) The data set {+5, 0, -15, +20} shows the number of points Zeke scored on each hand at a card game. Graph the scores. Explain the meaning of zero.

15. Words
Words that represent “Positive Integers” Above Earning money Win Gain Deposit Up Positive Increase +
Words that represent “Negative Integers” Below Owing money Having debt Lower Negative Loss Decrease Down -