Linear Equations in x and y

Domain and Range of the Set of Ordered Pairs $(x,y)$
That Satisfy the Equation $Ax+By+C=0$

Condition on A and B	Domain	Range
$A\ne 0$ and $B=0$	$\left\{-\frac{C}{A}\right\}$	set of all real numbers
$A=0$ and $B\ne 0$	set of all real numbers	$\left\{-\frac{C}{B}\right\}$
$A\ne 0$ and $B\ne 0$	set of all real numbers	set of all real numbers