Solving+Systems+of+Linear+Equations+Set+3

Two equations – graphically, substitution, elimination

When is there no solution and what is the graphical significance?

When are there infinitely many solutions (and how do we specify exactly which solutions we mean)?

Cramer’s Rule

Matrix equations and inverses (how do we tell when two matrices are inverses?)

Given three points on a quadratic function, how can we use our techniques for solving a system of equations to find the function in standard form?