College Algebra, Chapter 2, 2.4, Section 2.4, Problem 14

a.) Sketch lines through $(0, 0)$ with slopes $\displaystyle 1, 0, \frac{1}{2}, 2$ and $-1$.

b.) Sketch lines through $(0, 0)$ with slopes $\displaystyle \frac{1}{3}, \frac{1}{2}, - \frac{1}{3}$ and $3$.