Respuesta :
Answer and the Step-by-step explanation : -
1) x(y - 5) = 2
First you gotta open the brackets so then you'll get : -
xy - 5x = 2
Answer : - " since xy is remaining the equation will not linear "
2) y - 2(x + 9) = 0
"y - 2x - 18 = 0 "
"Y = 2x + 18 "
Answer : - "This is linear"
3) 3y + 6(2 - x) = 5
3y + 12 - 6x = 5
3y = 5 - 12 + 6x
3y = 6x - 7
Y = 2x - 7/3
Answer : -This is linear
4) 2(y + x) = 0
2y + 2x = 0
2y = - 2x
y = - x
Answer : - " This is linear "
