Parabolas can be the only conic sections that are considered functions because they pass the vertical line test. We have worked with parabolas before in quadratic equations, but parabolas formed by conic sections are a little different.
Toilet drainage rough-in steps. 1  Cut a hole in the subfloor just large enough for the bottom part of the toilet flange to sit. 2  If your installing the drainage underground, excavate the trench and have a supply of clean backfill ready (sand or gravel) to grade and cover the pipe.
Clean the Outside Portion of the Dryer Vent. Step 1. Locate the dryer vent cover on the outside of your house. Step 2. Remove the cover; the vent duct should slide right out if it isn't fastened or sealed to the home's exterior.Step 3. Using your dryer vent brush, remove the lint from inside the hole.Step 4.tep 3. Remove the vent from the back of the dryer by unscrewing the vent clamp and sliding the vent out of the elbow-shaped joint. Step 4. Using your dryer vent brush, remove the lint from the vent as well as the hole in the back of the dryer. Step 5. Reconnect the vent and move the dryer back against the wall.