9x 2 y 2 0 July 8, 2019 16 32 64 128 9x 2 y 2 36x 6y 18 0 9x 2 y 2 z 2 0 9x 2 y 2 18x 6y 9 0 9x 2 y 2 72x 8y 119 0 9x 2 y 2 54x 10y 55 0 Two lines 9x 2 y 2 6xy 4 0 are 9x 2 6xy y 2 18x 6y 8 0 Lines represented by 9x 2 y 2 6xy 4 0 are 9x 2 y 2 18x 4y 12 0 2x 9