This week in Pre-Calc we learned about Absolute Value Equations.  The main thing to know is that if it is an absolute value equation it can never be negative. Since it can never ever be negative you have to flip up the negative points when you graph it. Meaning when you graph the original equation (without thinking about absolute values), you need to mirror the negative points to make them positive for the absolute value equation. Another thing to know about Absolute Value Equations is piece-wise notation. Piece wise notation is when you make to equations that are the exact same, but for one of the equations you change the numbers in the absolute value braces to their opposites. To solve absolute value equations you should always isolate the numbers in the braces, and move all the numbers outside of it to the other side of the equation. After you’ve isolated it, you can get rid of the braces. Then solve the equation. To check plug your solution back into the equation.