SOLUTION: Could you please solve by using sustitution method. Please show details. Thank you. x - y = 3 3x - 2y = 3 Also please tell if it is independent, inconsistent or dependent.

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Could you please solve by using sustitution method. Please show details. Thank you. x - y = 3 3x - 2y = 3 Also please tell if it is independent, inconsistent or dependent.      Log On


   

Question 137272This question is from textbook
: Could you please solve by using sustitution method. Please show details.
Thank you.
x - y = 3
3x - 2y = 3
Also please tell if it is independent, inconsistent or dependent. This question is from textbook

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x-y=3
2.3x-2y=3
Let's use equation 1 to solve for x, then substitute into equation 2.
1.x-y=3
x=y%2B3
Substitute into 2.
2.3x-2y=3
3%28y%2B3%29-2y=3
3y%2B9-2y=3
y%2B9=3
y=3-9
y=-6
Back substitute into your derived equation to solve for x.
x=y%2B3
x=-6%2B3
x=-3
Since you obtained a unique solution, the system is independent.
+graph%28+300%2C+300%2C+-5%2C+5%2C+-10%2C+10%2C+0.5%2A%283x-3%29%2C+x-3%29+