Answer:
all real numbers
all real numbers
4
-4/3
Explanation:
This function is a linear function. It's just a line. Lines have a domain and range of All Real Numbers.
Rearrange this equation to see y-intercept and slope.
y = 12 - 4x / 3
Separate the top numbers, keep the same bottom number. (numerator and denominator)
y = 12/3 - 4x/3
Put the x term in front, after the equals sign.
y = -4/3 x + 12/3
Simplify.
y = -4/3 x + 4
The y-intercept is 4 and the slope (rate of change) is -4/3.