I can graph integers on a number line. I can evaluate absolute value expressions.

A whole number that can be positive or negative (or zero) Whole numbers and their opposites {… -4,-3,-2,-1,0,1,2,3,4,…} NO decimals/fractions

Write an integer for each situation: 5 degrees below zero -5 A loss of 12 yards -12 A bank deposit of $80 +80

When graphing integers, we use a number line. Negative integersPositive integers Zero is neither positive nor negative

Graph the set of integers on the number line. {4,-2,3,8} {5, 2, 0, -1, -6}

The distance between a number and zero on the number line. Absolute value is illustrated by placing a number or expression inside vertical bars. Ex: |3| = 3 |-3| = 3

|6| |0| |-5| What About… -|-9| -|13| |-14|-|2| In the order of operations, absolute value acts as parentheses

Same steps to evaluate an algebraic expression. Try it! |x| + 7 if x = -13 |-13| |a|●|b| - 12 if a = -5 and b = 8 28

Numbers can be compared using the following symbols: < means “less than” Ex: 2<7 “2 is less than 7” = means “equal” Ex: -3=-3 “-3 is equal to -3” > means “greater than” Ex: 5>-1 “5 is greater than -1”

How can you tell one number is less than another? Graph them on a number line. Compare -2 and -4 Graph the numbers to see where they lie -2 > -4 since -4 is lower on the number line.

Compare the following numbers: 0 and and -8 -|4| and -|-5| |-3| and |8| |-2| and |2|

Section 1.4 Worksheet