
Determine if the solution is viable or non-viable

Solve the system of linear equations using the substitution method. Show ALL your steps.
Solve the system of equations using the elimination method. Show ALL your steps.
Use the graph to solve the system of linear equations. Select the correct ordered pair solution.
Determine whether this system of equations has one solution, no solution, or infinitely many solutions.
x - y = 1
x - y = -6
Determine whether this system of equations has one solution, no solution, or infinitely many solutions.
3x - y = 6
-3x + y = -6
Determine whether this system of equations has one solution, no solution, or infinitely many solutions.
9x - 15y = 24
6x - 10y = -16
Solve the system of linear equations using substitution
Solve the system of linear equations using the elimination method.
The sum of two numbers is 30 and their difference is 12. Find the two numbers. (Use the steps provided.) Show all your work.