Question

What is the solution set of 4x=yand 2x - y=0?

Answer 1

Answer:

$the \: answer \: is \: b \\ 4x = y \\ 2 {x}^{2} - y = 0 \\ 2 {x}^{2} - 4x = 0 \\ 2x(x - 2) = 0 \\ x = 0 \: and \: x = 2 \\ y = 0 \: and \: y = 8$