Question

What is the solution of the system? Use substitution. y=x+6y=2x

Answer 1

doesn't make a lot of sense... and equation with 2 equal signs...

Answer 2

y=x+6y ---(1)
y=2x ---(2)

sub (2) into(1)
2x=x+6(2x)
2x=x-12x
x=0

sub x=0 into (2)
y=0

Answer 3

Yeah I no!!

Answer 4

Well y=x+6y=2x.
I guess you can imply
y=2x
x+6y <-- substitute for y
x+6(2x) = 13x

If 13x = 2x, then x = 0. If x=0, then y=0 too.