What is the domain and range of the step function with the equation below f (x) = - 3 x

The function f (x) = - 3x follows a linear form y=ax+b, where a is the slope and b is the y-intercept. From our function:

f (x) = - 3x

f (x) = - 3x+0

slope, a=-3 and y-intercept is 0. This implies that the function is a linear function, thus the domain and range will be:

domain:

(-∞,∞)

Range:

(-∞,∞)