83.7k views
17 votes
Explain why you would solve the system y = 2x and 3x + y = 10 using substitution instead of by graphing?

User Joe Frank
by
7.6k points

1 Answer

12 votes

Step-by-step explanation: I would use substitution for this system because one of the variables, y, is already isolated in the first equation.

If we were to solve by graphing, we would first need to convert the

second equation to y = mx + b form and then graph both of the lines.

User Ziko
by
7.8k points