Respuesta :

Since it says it's a horizontal line, that means the slope is 0. Now, let's find the equation using the slope-point form:

[tex]\begin{gathered} y-y_0=m(x-x_{_0})_{}_{} \\ y-6=0(x-4) \\ y=6 \end{gathered}[/tex]

That's it, the equation is y=6.