Two or more equations working together.

Example:

x + y = 6

−3x + y = 2

Those two equations are shown in this graph:

Example:

x + y = 6

−3x + y = 2

Those two equations are shown in this graph:

Copyright © 2016 MathsIsFun.com

Example:

x + y = 6

−3x + y = 2

Those two equations are shown in this graph:

Copyright © 2016 MathsIsFun.com