Given the function
We will plot the function by methods of determining the coordinates. We will evaluate the given function at certain values of x.
The extremum can be found at a value where the absolute value term becomes zero. Based on the given function, the x-coordinate where the absolute value term becomes zero is equal to -4. Evaluate the function at this value of x, we have
Next thing is to have a value of x and evaluate it at the positive value of the absolute value term. In this case, I will be using x = -3. We have
We now have two coordinates that will help us plot the function. If we map this on a cartesian coordinate, we have
Draw a line to connect the two dots to show the positive value of the absolute value function. We have