{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/09e80e96daa84ff084498b1370ad0c0f\" frameborder=\"0\" width=\"960\" height=\"720\" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>","height":720,"width":960,"provider_name":"Loom","provider_url":"https://www.loom.com","thumbnail_height":720,"thumbnail_width":960,"thumbnail_url":"https://cdn.loom.com/sessions/thumbnails/09e80e96daa84ff084498b1370ad0c0f-00001.jpg","duration":116,"title":"SAT #3_S3_Q12","description":"p:  y = a(x-2)(x+4) In the quadratic equation above, a is a nonzero constant. The graph of the equation in the xy-plane is a parabola with vertex(c,d). Which of the following is equal to d ? \na:  -9a ;\n -8a ;\n -5a ;\n -2a  ;"}