
The line equation in slope-intercept form is
, where m is the slope and b is the y-intercept.
First find the slope (m).
\Slope formulae is 
(Replace
with 3, 3, 0 and 6)
(Subtract:
)
(Additive identity property:
)
Slope is
.
Parallel line has same slope.
\So, slope of the new line =
.
Next find the y-intercept (b).
\
(Substitute
for m)
(Substitute -3, -1 for x, y)
(Product of two same signs is positive)
(Subtract 3 from each side)
(Apply Commutative property:
)
(Apply Additive inverse property:
)
(Subtract:
)
Substitute
for m and
for b in the Slope-intercept form equation.
.
The equation in slope-intercept form is
.