we have 55x+20y=-6
REmember that
The equation of the line in slope intercept form is equal to
y=mx+b
where
m is the slope
b is the y-intercept
In this problem we have
55x+20y=-6
so
isolate the variable y
20y=-55x-6
y=-(55/20)x-6/20
y=-2.75x-0.3
therefore
the answer is
slope=-2.75
y-intercept=-0.3