It's a linear function in slope-intercept form (y = mx + b)
f(x) = 4 - 4x = -4x + 4
m = -4, b = 4.
Domain of a linear function is the set of all real numbers.
Range of a linear function where m ≠ 0 is the set of all real numbers.
Answer: [tex]Domain=\mathbb{R},\ Range=\mathbb{R}[/tex]
