Given the line:
[tex]4y+12=0[/tex]We simplify to have:
[tex]\begin{gathered} 4y=-12 \\ y=-\frac{12}{4} \\ y=-3 \end{gathered}[/tex]The line y=-3 is a horizontal line passing through y=-3.
Two points on the line that can be graphed are:
[tex]\begin{gathered} (1,-3) \\ (5,-3) \end{gathered}[/tex]You can pick any value of x. The value of y has to remain constant.