Sections 2.1, 2.2

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## Sections 2.1, 2.2

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**Sections 2.1, 2.2**Positive and Negative Numbers (Part 1)**What are integers?**The whole numbers and their opposites. …-3, -2, -1, 0, 1, 2, 3… (Numbers marked on a standard number line.)**Graph the following integers.**-5, -1, 10, 4, -9**Graph the following integers.**-5, -1, 10, 4, -9 What do the following symbols mean? <, >, =**What Is Absolute Value?**The distance a number is from zero.**Example 1-4d**Evaluate each expression.**Example 1-4d**Evaluate each expression. Let x = 3, y = 12, z = -9**4 - you could teach it right now**3 – you could ace it on a test 2 – you could give an example 1 – may of heard of it, but that’s about it**Rules for Adding Integers**Same Signs: Add the two numbers and use the same sign. Different Signs: Subtract the two numbers, use the sign of the number with the larger absolute value.**Evaluate the following expressions.**38 + (-23) = -14 + (-15) = -35 + (-39) = -34 + 21 = Same Signs: Add the two numbers and use the same sign. Different Signs: Subtract the two numbers, use the sign of the number with the larger absolute value.**Evaluate the following expressions.**Same Signs: Add the two numbers and use the same sign. Different Signs: Subtract the two numbers, use the sign of the number with the larger absolute value.**Homework**Practice 2.1, 2.2 All