3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
3x+2y=6 2y=-3x+6 y=-1.5x+3
3x-2y=6 -2y=-3x+6 y=1.5x-3
-3x + 2y = 9 2y = 3x + 9y = 1,5x + 4,5
3x + 2y = 7
You cannot solve one linear equation in two unknown variables.
3x-2y = 5 -2y = -3x+5 y = 1.5x-2.5 in slope intercept form
y=16 x= -4
3x + 2y = 8 This is an equation. It could be the equation of a line.