Question

Describe the graphs of the functions f(x) = 2x – 1 and g(x) = –2x – 1. Compare and contrast the domain and range of f(x) and g(x).

Answer 1

Those are linear functions of the form y = mx + b, where m is the slope and b is the y-intercept.

If m is positive, what does that mean? If m is negative, what does that mean?

The domain are the values you can input as x.
The range are values that are output.
What values can the domain and range be for either function?