Question

Y-2=x
-x=y
Solving system using substitution

Answer 1

`y - 2 = x.................(eq. \: 1)`

`y = - x.......................(eq .\: \: 2)`

put y = - x in equation 1 :-

`- x - 2 = x`

`x + x = - 2`

`2x = - 2`

`x = (2)/(2)`

`x = - 1`

put x = -1 in equation 2 :-

`y = - ( - 1)`

`y =1`