When using the substitution method for solving a system of linear equations in two variables, what should be the first step?(1 point)
Responses
Solve one linear function in terms of one of its variables.
Solve one linear function in terms of one of its variables.
Add the two equations together to create one equation.
Add the two equations together to create one equation.
Graph the two equations.
Graph the two equations.
Start by guessing at values for the variables.