Question 1044799
Y=3(x-4)
3x-y=12
I'm assuming this is to solve.
substitue 3x-12, which is 3(x-4) into y in the second equation.
3x-3x+12=12
12=12
Infinite solutions.
y=3x-12
3x-y=12
y=3x-12.  These are the same equation.