The slope is and the point is
.
Apply point-slope form of the line equation is , where
are the coordinates of a point on the line and m is the slope of a line.
(Substitute
)
(Product of two same signs is positive)
Apply distributive property: .
(Simplify)
(Subtract 4 from each side)
(Simplify)
The slope-intercept form of the line equation is .