System of equations: Two or more equations on the same coordinate plane with one of the following types of solutions.
One Solution: The two equations cross at exactly one point. This point is written as (x, y).
No Solution: The two equations are parallel lines. There is no solution because the two lines never touch.
Infinite Solutions: The two equations are the same line. Every point in one equations is exactly the same as every point on the other line.
System of inequality: Two or more inequalities on the same coordinate plane. Where the graphs over lap, contain the solutions for the set of inequalities.