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system of linear equations
two or more linear equations together
solution of a system of linear equations
an ordered pair in a system that makes all the equations of a system true
when the graphs of the equations of a system are parallel
infinitely many solutions
when the graphs of the equations of a system are the same
replacing one variable with an equivalent expression containing the other variable
add or subtract equations to eliminate a variable
describes a region of the coordinate plane that has a boundary line
solutions of an inequality
the coordinates of the points that make an inequality true
system of linear inequalities
two or more linear inequalities together
solution of a system of linear inequalities
a solution that makes each inequality in the system true