Download 1.3BааInequalities and Absolute Value An ______ is a

Warm­up: Write each number in the form a/b using integers to show that it is a rational number.
2) ­7
1) 0.24
1.3B Inequalities and Absolute Value
An ________ is a mathematical sentence that compares the value of two expressions using a symbol, such as < or >.
a < b
_____________
a > b
or ______________
Also, there are three other symbols that compare two expressions:
a ≤ b
or
a ≠ b
or
a ≥ b
_______________
______________
_____________
_________________
________________
_______________
Examples: Place the correct inequality symbol (< or >) between the two expressions.
1) ­7 10
2) 1/2 1/4
3) ­1 ­5
4) Write ­3/8, ­1/2, and ­5/12 in order from least to greatest.
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Two numbers that are the same distance from zero on a number line but lie in opposite directions are ___________.
Examples of opposites: 5 and ­5
­1/2 and 1/2
0.76 and ­0.76
The ____________ of a number is its _____________ on a number line. The symbol for absolute value is two vertical bars around the expression. |x| ­ This is read "the absolute value of x."
Examples: a) |3| = b) |­7| = c) |0| =
d) |­12.2| = e) |x| = 6
f) |x| = 13
g) |x| = ­4
i) |x| = 0
1.3B p. 21 #24­62 (E)
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