Linear Equations in Two Variables
y = 3x
y = -6x + 12
3x+4y = 15
10+5y = 7x
9y-8 = 4x
2x+1 = 7
-4x = y
7y = 7x - 14
-12x+1 = y
y = x-7
Linear Inequalities in Two Variables
4x-2y < 15
y≤ 5x+10
10-5y ≥ 7x
9y-8 < 4x
y> 2x + 1
x-y ≠ 5
-x+y ≥ -4
y ≥ -5x -3
8y-9 > x
8x+3y <20
