Chapter 1.5, Problem 122E

(a)

To determine

The solution set of the equation $ax+b=0$ if $a\ne 0$.

(b)

To determine

The solution sets of inequalities $ax+b<0$ and $ax+b>0$, if $a>0$.

(c)

To determine

The solution sets of inequalities $ax+b<0$ and $ax+b>0$, if $a<0$.