Sketch the graph and find the domain and range of the function f(x) = 2x - 1.

$$f(x) = 2x - 1, \quad \text{i.e., } y = 2x - 1$$ This is a linear function (degree 1 polynomial) with slope $m = 2$ and y-intercept $-1$. --- A polynomial function has no restrictions (no division by zero, no even roots, no logs). It is defined for every real $x$. $$\boxed{\text{Domain} = (-\inf...