Questions:
System of Linear Equations with 2 Variables
1. Solve by graphing
3y - 3x = 9
x - y = 1
2. solve by substitution and determine whether equations are independent, dependent, or inconsistent
7y = 9x
-3x = 4y
3. solve by substitution method
x + 6y = -2
5x - 20y = 5.