Chapter 7 Linear Systems •A system of equations is a set of two or more equations that use the same variables. 2 x − y + z = 4 A brace is y = x + 3 x + 3 y − z = 11 used to keep 4 x + y − z = 14 y = −2 x + 3 the equations of a system together.•If the graph of each equation in a system of two variablesis a line then the system is a linear system.
Chapter 7 Linear Systems They can Coinciding Parallel lines intersect. lines, the same line.One solution Infinite solution No solution. Consistent Consistent InconsistentIndependent Dependent