Warm Up Problem 14.3 ÷ 0.2.

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Presentation transcript:

Warm Up Problem 14.3 ÷ 0.2

Integers and Graphing Lesson 5-1

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

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

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

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

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

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

Example 4 Graph -7 on the number line.

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

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

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}

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. -5 -4 -3 -2 -1 0 1 2 3 4 5

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.

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 -