# Systems of Linear Equations - Practice

Solve the given system of linear equations, then check your solution.
(You can also

*zoom in*and*out*to view details.)Why is this system called *linear* ?

Which conditions allow you to decide *a priori* whether a linear system has *a single unique solution / infinitely many solutions / no solution*?

Write the equations of a system having a single unique solution, one with infinitely many solutions, and one having no solution.