Respuesta :

[tex] \bf (\stackrel{x_1}{2}~,~\stackrel{y_1}{-4})~\hspace{7em}
slope = m\implies 0
\\\\\\
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-(-4)=0(x-2)\implies y+4=0\implies y=-4 [/tex]