Question 345578
Hi,
Using point-slope form of line
{{{(y[2] - y[1])/(x[2] - x[1]) = m}}}
Questions states the following points 
(-2,-5)& (6,-5)
.
{{{((-5) - (-5))/((-2) -(6))= m}}}
.
{{{0/-8= m}}}
m = 0  Line parallell to x-axis as y value of -5 never changes
.
slope-intercept form
y = mx + b  where be in the y-intecept
.
y = -5