Algebra
Lesson 67 of 224 · Parabola Focus and Directrix 1 · Basic studies
Parabola Focus and Directrix 1
Parabola as the locus of all points equidistant from a point and a line
More free lessons at: http://www.khanacademy.org/video?v=ZJf9shWlMz0
Lesson 67 of 224 · Parabola Focus and Directrix 1 · Basic studies
Parabola as the locus of all points equidistant from a point and a line
More free lessons at: http://www.khanacademy.org/video?v=ZJf9shWlMz0