The line equation in slope-intercept form is
,
where m is the slope and b is the y-intercept.
\First find the slope,
\
(Substitute
)
(Simplify)
(Additive inverse property
)

The line crosses the y-axis at (0, -4). So the y-intercept is -4.
\Substitute m = 0 and b = -4 in slope-intercept form line equation.
\
(Simplify)\
\

The slope-intercept form of the line equation is 