Doug C. answered 02/25/19
Math Tutor with Reputation to make difficult concepts understandable
The WyzAnt video recording is having problems tonight. So, here is a link to a Desmos graph that has a picture of what was in the video. Hopefully you can follow along.
The final quadratic equation I did not carry to completion, but hopefully you can figure that out.
https://www.desmos.com/calculator/hgdt8gzgnp