course mth 163 Based on the graph, the water is decreasing at a slope of -3.27. the equation of the line is y = mx+b when solving for the variable b you obtain 187.02:First find slope: (102 - 144.5) / (26-13) = -42.5/13= -3.27 Then find b: 102 = -3.27(26) + b 102 = -85.02 + b 187.02 = b The next question asks at 48 sec what is the range: y = -3.27(48)+ 187.02 y = -156.96 + 187.02 y = 30.06 cm Then determine the time where the range is 32 cm: 32 = -3.27x + 187.02 -155.02 = -3.27x x = 47.41"