Question 707757
<pre>
Two ways to do it.

First way:  Using point slope formula:

y - y<sub>1</sub> = m(x - x<sub>1</sub>) where (x<sub>1</sub>,y<sub>1</sub>) = (8,-6)

y - (-6) = 0(x - 8)

   y + 6 = 0

       y = -6

Second way:  Since the slope is 0, the line is horizontal, so the
graph is the black line below:

{{{drawing(400,400,-10,10,-10,10, graph(400,400,-10,10,-10,10),
line(-10,-6,10,-6),circle(8,-6,.15),
circle(8,-6,.1),circle(8,-6,.08),

locate(7.3,-6.2,"(8,-6)") )}}}

and since it goes through the y-axis where y is -6, its equation 
is y = -6, because all points om that line have their y-coordinate 
as -6. So you can just ignore the x-coordinate.  

Edwin</pre>