Question 1042539
<a href="https://www.youtube.com/watch?v=M8LGsQMwwj4">Derive equation for a parabola given focus and directrix, using distance formula</a>


<a href="https://www.youtube.com/watch?v=Wworlx39KfQ">another Derive equation of parabola given focus and directrix using distance formula</a>