2x + 3y = 1 y = 1/3 - 2x/3
(1, 1)
Both equations are equal and so: 3x+1 = 2x+3 3x-2x = 3-1 x = 2 and by substituting y = 7
1
2x +1 = 5x-2 2x +3= 5x 3 = 3x x=1
x= (-1/2)y-2.5
(2, 1)
2x + 2 = 4x -1 2x = 3 x = 1.5
(3, 1)
(4, -1)
(-1, 0)
x+3(x+1)=2x x + 3x + 3 = 2x 2x + 3 = 0 2x = -3 or x = -1.5