12 9 x 1 3 July 8, 2019 16 32 64 128 17 12 x 1 )= 9 3x X 12 9 x 1 6 x 1 3 9 3x (- 12 x (- 1 33x 12 9 x 1 12 2 5 x 9 1 3 12 x 1 3 5 9 1 9 x 1 3 x 12 0 9 x 1 )= 3 5x 1 )- 12 12 3 4 x 9 1 2 12 x 1 )= 3 2x 1 )+ 9 9 1 4 x 12 1 3 Y 12 =- 1 3 x 9 12 1 2 x 3 x 9 1 2 Y 12 =- 1 3 x 9 slope