Question

3x = 7 – y
2y = 14 – 6x

Answer 1

both equations can be written as
\[y=7-3x\] so they are th e same line

Answer 2

So y = 7 - 3x
put this into second equation
2(7-3x) = 14 - 6x
14 -6x = 14 -6x
They are equal and represent the same line on a graph. So infinite number of solutions

Answer 3

Thanks