Chapter 2 Summary and Review 193Inequality symbols:
means is not equal to
means is greater than or equal to
means is less than or equal toEach of the following statements is true:
Read as “5 is not equal to 3.”
Read as “4 is greater than or equal to 6.”
2 2 Read as “2 is less than or equal to 2.”4 6
5 3
The absolute valueof a number is the distance on
a number line between the number and 0.
Find each absolute value:
0120 12 0 90 9 000 0Two numbers that are the same distance from 0 on
the number line, but on opposite sides of it, are
called oppositesor negatives.
The opposite of 4 is.
The opposite of is 77.
The opposite of 0 is 0.77
4
The opposite of the opposite rule
The opposite of the opposite (or negative) of a
number is that number.
Simplify each expression:
(6) 6 080 8 0 260 26The symbolis used to indicate a negative number,
the opposite of a number, and the operation of
subtraction.
negative 2 the opposite of negative four six minus one2 (4) 6 1
- Write the set of integers.
- Represent each of the following situations using a
signed number.
a. a deficit of $1,200
b. 10 seconds before going on the air - WATER PRESSURE Salt water exerts a pressure
of approximately 29 pounds per square inch at a
depth of 33 feet. Express the depth using a signed
number.
REVIEW EXERCISES
Sea levelA column of salt water1 in. 1 in.Water pressure is
approximately
29 lb per in.^2
at a depth of
33 feet.- Graph the following integers on a number line.
a. 3 ,0,4, 1
− 4 − 3 − 2 − 1 01 234b. the integers greater than 3 but less than 4− 4 − 3 − 2 − 1 01234- Place an or an symbol in the box to make a
true statement.
a. b. - Tell whether each statement is true or false.
a. b. - Find each absolute value.
a. b. c. - a.What is the opposite of 8?
b. What is the opposite of?
c. What is the opposite of 0? - Simplify each expression.
a.
b.
c. 0