Question 773186
 One standard equation for a line is {{{y=mx+b}}} where {{{m}}} is the slope and {{{b}}} is the {{{y-intercept}}}. 

through ({{{-3}}},{{{ -5}}}); 

line {{{y= -9}}}, compared to {{{y=mx+b}}}, you can see that slope is {{{0}}} and

{{{y-intercept}}} {{{b=-9}}}

if lines parallel, they have same slope; so, the line parallel to {{{y= -9}}} 

will be a line {{{y=-5}}}


{{{drawing( 600, 600, -10, 10, -10, 10,circle(-3,-5,0.1),locate(-3.2,-5.2,P(-3,-5)), graph( 600, 600, -10, 10, -10, 10,-5, -9)) }}}