which of this following is a system of linear equations in two variables?
a.)x+7y>−2. b.) 3x+5y=-2
2x-y 1<1. x-4y =9

c)x + 9y = 2. D.)4x + 1 =8
x -3y > 12. 3y-7=11





don't answer when you don't know the answer​