This video is about how to graph a parabola using the vertex, the intercepts and its axe of symmetry, and not only that it will show you how to know its exact shape before you graph it just by knowing the discriminant and the leading coefficient of t...he quadratic function. Duration: 28:32[more]

This lesson teach you how solve the 2x2 system of equations using inverse matrix and you will learn a new test called TCM-test that will help know in advance the type of system and solution you have.
Duration:20:49

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