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Systems of Equations

3 methods to solve a system of equations graphing, substitution, addition/subtraction (or elimination)
system of equations two or more linear equations
solution set for coinciding lines (same slope, same y-intercepts) infinitely many solutions
solution set for parallel lines (same slope, different y-intercepts) no solution
solution set for intersecting lines (different slopes) ordered pair for point of intersection
open half-plane region of a plane which does not include the boundary line
closed half-plane region of a plane which does include the boundary line
boundary line the inequality graphed as a solid or dashed line
dashed boundary line inequality is either < or >
Created by: mcchesney