Provide an Appropriate Response $y$ -Axis to Generate a Solid $$y = - 2 x ^ { 2 } \quad y = - x$$

Essay

Provide an appropriate response.
-The region shown here is to be revolved about the $y$ -axis to generate a solid. Which of the methods (disk, washer, shell) could you use to find the volume of the solid? How many integrals would be required in each case?


$$y = - 2 x ^ { 2 } \quad y = - x$$