How do you solve a system of equations by substitution?
To solve a system of equations by substitution, solve one of the equations for one of the variables, and substitute this expression into the other equation. Then, solve the resulting equation for the remaining variable and substitute this value back into the original equation to find the value of the other variable.
How do you solve a system of equations by graphing?
To solve a system of equations by graphing, graph both equations on the same set of axes and find the points at which the graphs intersect. Those points are the solutions.
How do you solve a system of equations by elimination?
To solve a system of equations by elimination, write the system of equations in standard form: ax + by = c, and multiply one or both of the equations by a constant so that the coefficients of one of the variables are opposite. Then, add or subtract the two equations to eliminate one of the variables. Solve the resulting equation for the remaining variable.
What are the solving methods of a system of equations?
There are several methods for solving a system of equations, including substitution, elimination, and graphing.
What is a system of linear equations?
A system of linear equations is a system of equations in which all the equations are linear and in the form ax + by = c, where a, b, and c are constants and x and y are variables.