Answer
(a) See below.
(b) Domain: $(-\infty, \infty)$
Range:$[-\infty, \infty)$
(c) The function is always increasing since its linear and its slope is positive.
Work Step by Step
Recap:
The domain is a horizontal span from the function's smallest value of x to the function's largest value of x.
The range is a vertical span from the function's smallest value of f(x) to the function's largest value of f(x).
A function is increasing in the domain intervals where its slope is positive. On the other hand, a function is decreasing in the domain intervals where its slope is negative.
