` 2x^(2) - 13x+20 = 0, 2y^(2) - 7y + 6 = 0`

I. x^(2) - 3x + 2 = 0" "II. 2y^(2) - 7y+6 = 0

I. 5x^(2) + 2x - 3 = 0" "II. 2y^(2) + 7y + 6 = 0

I. x^(2) - 6x = 7" " II. 2y^(2) + 13y + 15 = 0

I. x^(2)+5x+6=0 II. y^(2) + 7y + 12 = 0

The figure formed by the pairs of lines 6x^(2) + 13xy + 6y^(2) = 0 and 6x^(2) + 13xy +6y^(2)+ 10x + 10y + 4 = 0 is a