Question 572441
solve this substitution problem. If the system does not have exactly one solution, state whether it has no solution or infinitely many solution. 
y= 4x
3x-y=1 

--------------------
Substitute for "y" and solve for "x":
3x-4x = 1
-x = 1
x = -1
------------------
Solve for "y":
y = 4x
y = 4*-1
y = -4
====================
Cheers,
Stan H.
==============