14:58Factoring Polynomials GCF and Quadratics (a=1, a not= 1)Mr. D's Math Channel457 views·2 years ago
8:56Graphing Parabola's with Vertex at (-h, -k) (directrix and focal point)Mr. D's Math Channel277 views·8 years ago
9:17Graphing a Parabola with Directrix and focal point at the originMr. D's Math Channel327 views·8 years ago