Represent lines parallel to y = 2x and y = 3x by a second-degree equation
1
6x2 - 5xy + y2 + (3c1 + 2c2) x + (-c1 - c2) y + c1 c2 = 0
2
6x2 - 5xy + y2 + (3c1 + 2c2) x + (-c1 - c2) y - c1 c2 = 0
3
6x2 - 5xy + y2 + (3c1 + 2c2) x - (-c1 - c2) y - c1 c2 = 0
4
None of these