8th,Team+1

media type="custom" key="3041468"Chapter 2 Properties of Real Numbersmedia type="youtube" key="KPwufFbvEFE" height="344" width="425" Names: Marco(2.3), Sam(2.2), Tim(2.5), Josia(2.5)   **Example1**. Finding Absolute Value


 * 5| If 5 is positive, then |5|=5


 * -5| If 5 is negative, then |5| is negative

Always use definition of opposites Which means if it’s a positive it’s still positive but if the variable is negative then it will be positive because of opposites and absolute value.

 **Example 2** .Solve an absolute value Equation 1.What numbers are 3 units from Zero? Both 3 and –3 are 3 units from Zero. That means that there are two solutions: 3 and –3 2.The absolute value is never negative so if the number is negative then there is no solution.  **TRY THESE** Use Mental Math to Solve the Equation 1. |x| = 7 2.|x| = -9 3.|x| = -5.9

 **Example 3**. Finding the opposite of a number

If -4 is 4 units from Zero what is the opposite of –4?It would be 4 because if –4 is 4 units from Zero the go 4 units to the right not the left.

Use a number line to solve these problems

1. What is the opposite of – 5.9

2.What is the opposite of 4?

3.What is the opposite of 5?