Question

A line passers through the point (2,-4) and has a slope of 0, what is the equation of the line?

Answer 1

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