The domain of the function is from -128 to 128, and there doesn't seem to be any interval with unexpected behavior.

Now let's calculate the slope and intercept.

Slope (m) = (f(x2) - f(x1)) / (x2 - x1)
Let's take x1 = -128 and x2 = 128.

m = (220.0 - (-36.0)) / (128 - (-128))

Intercept (b) = f(x) - m*x
Let's take x = 0, f(x) = 92.0

b = 92.0 - m*0

