Graph each pair of numbers on a number line. a) 5, 3 b) 1 2 , 1 2 c) 2 1 3 , 4 2 3 d) 1.25, 3.25 Solution a) 23 5 b) 2524 232221 0 1 2 3 4 5 21 2 1 2 2524 232221 0 1 2 3 4 5 3 is 3 units to The number 5 is 5 the left of 0. units to the right of 0. unit to the 1 2 is 1 2 unit to the 1 2 is 1 2 left of 0. right of 0. c) 242 3 21 3 2524 232221 0 1 2 3 4 5 d) 23.25 1.25 2524 232221 0 1 2 3 4 5 To graph 4 2 3 , move 2 1 3 is to the right of 0. To graph 3.25, move 1.25 is to the right of 0. 4 units to the left 3 units to the left of 0, of 0, then move another then move another 0.25 2 3 unit to the left. unit to the left. YOU TRY 1 Graph each pair of numbers on a number line. a) 3, 4 b) 3 4 , 3 4 c) 1 1 2 , 3 1 2 d) 4.75, 2.75 2 Compare Signed Numbers Remember that numbers get smaller as we move to the left on a number line and that numbers get larger as we move to the right on a number line. We can use the less than symbol, , and the greater than symbol, , to compare signed numbers. For example, we can compare the numbers 1 and 4 in two ways. 1 4 25 24 23 22 21 0 1 2 3 4 5 1 4 because 1 is to the left of 4. OR 4 1 because 4 is to the right of 1. b T R 1 is less 4 than b T 4 is greater 1 than EXAMPLE 1 Fill in the blank with or to compare each pair of numbers. Look at the number line to help you, if necessary. a) 7 3 b) 6 1 c) 5 8 d) 2 4 e) 3 0 2827262524 232221 0 1 2 3 4 5 6 7 8 EXAMPLE 2 718 CHAPTER 10 Signed Numbers www.mhhe.com/messersmith
messersmith_power_basic_college_1e_ch4_7_10
To see the actual publication please follow the link above