1) How many solutions does this system have? Use substitution.
y=2x+1 and 4x-2y=6
2) True or False.
You cannot use substitution to solve a system that does not have a variable with coefficient of 1 and - 1.
3) What is the solution of the system? Use substitution.
7x-2y=1 and 2y=x-1
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