Question 661634
the line {{{y+3=0}}} or {{{y=-3}}} is a line parallel to {{{x-axis}}} passing 

through ({{{0}}},{{{-3}}}) and slope is {{{m=0}}}


{{{drawing(300,300,-5,5,-5,5,grid(0),circle(0,-3,0.2),graph(300,300,-5,5,-5,5,0,-3))}}}