Solve the system of equations using substitution:?

Question

Solve the system of equations using substitution:
x=2y + 1
-6y = -3x + 3

Answer 1

1st equation
x=2y + 1
second equation
-6y = -3x + 3
substitute for x in the second equation, since the first equation tells you what it is
-6y = -3(2y+1) + 3
-6y = -6y -3 +3
0y = 0
SO,
The two equations are equivalent. Any x and y that fall on the line x = 2y + 1 work.

Answer 2

substitution means to take the value of X as given (in the first equation) and wherever X appears in the other equation, you take out the X and you substitute its value

So:
-6y = -3 (2y + 1) + 3
Then simplify:
-6y = -6y + -3 + 3

So:
-6y = -6y

So y can be any number!