System of Linear equations
Two or more linear equations that have the same variables that relate similar information to solve both equations
Linear system
Common synonym of system of linear equations
Solving by substitution
Taking an equation and isolating the variable then plug in the other original equation and solve
Solve by elimination
Taking the equations and adding subtracting them to make zero with x variable then solve for remaining variable then eliminated one
Coincident lines
Lines that have same slope and y intercept
Infinite
Goes on forever