This week in Precalculus 11 we learned about Absolute Value Functions. We have already done absolute values which is:

Which is

Absolute values turn the equation positive. Therefore an Absolute Value Function can only be positive.

As you can see the blue line is , and because absolute values need to be positive then the line cannot be below the x-axis, therefore it is flipped as you can see by the red line:

Thank You for Reading!