Question 148976
me if these systems are consistent, inconsistent, or dependent? 
3x - 3y = -9
9x - 9y = -27 
----------------
Multiply thru the 1st equation by 3 to get:
9x - 9y = -27
-------
So you see the 2nd equation is simply a multiply of the 1st equation.
The system is said to be dependent.
Cheers,
Stan H.