

The line equation in slope-intercept form is
, where m is the slope
and b is the y-intercept.
\Original equation is 
(Distribute
)
(Product of two same signs is positive)
(Multiply:
)
According to subtraction property of equality: Subtract 3 from each side.
\
(Aply additive inverse property:
)
(Apply additive identity property:
)
(Subtract:
)
The line equation in Slope-intercept form is
.