Question

1. when using the substitution method, what do you do after solving one equation for one variable?

a. graph the equations
b. eliminate a variable
c. substitute the expression into the other equation
d. factor the equation

Explanation:

Step1: Recall substitution method steps

The substitution method for solving systems of equations has two core initial steps: first, solve one equation for a single variable, then use that result in the second equation.

Step2: Match to the options

After isolating a variable in one equation, the next step is to substitute that variable's expression into the remaining equation to create a single-variable equation that can be solved. This matches option c.

Answer:

c. Substitute the expression into the other equation