form A function, f(I, y), is described below in 3 different ways: with a formula, with a table and with a contour graph. However, one of these descriptions is inconsistent with the other 2. Which one is it? Function Formula: f (x, y) . 2x + 2xy - 3x + y' + 3y-1 Values of f(I, y): y \\ x 0. 0.5 1.5 2 2.5 3 3.5 4 O. -2 -2 4 8 13 19 0.5 0.75 -1.75 .1.5 -0.25 2 5.25 9.5 14.8 3 0.5 -1 -1.5 0.5 3 6.5 11 1.5 5.75 2.5 0.25 -1 -1.25 -0.5 1.25 4 7.75 2 9 5 2 0. 0. 2 5 2.5 12.8 8 4.25 1.5 -0.25 -0.75 0.5 2.75 3 17 11.5 7 3.5 0.5 -0.5 3.5 21.8 15.5 10.3 6 2.75 0.5 -0.75 -1 -0.25 4 27 20 14 9 5 2 0. -1 Contour Plot: 69 - 79 59 - 69 49 - 59 38 - 49 28 - 38 18 - 28 8 - 18 -2-+8 O a) The formula is inconsistent with the others. O b) The table is inconsistent with the others. O c) The contour plot is inconsistent with the others